{"product_id":"casio-g-shock-gdg-b100-1a5dr-mudman-master-of-g-yellow-men-watch","title":"CASIO G-SHOCK GDG-B100-1A5DR MUDMAN MASTER OF G YELLOW MEN WATCH","description":"\u003c!--\n  CITY CHAIN SINGAPORE — SHOPIFY PRODUCT DESCRIPTION (cc-pdp)\n  CASIO G-SHOCK GDG-B100-1A5DR MUDMAN DIGITAL WATCH\n  Module 3587 | MUDMAN \/ MASTER OF G - LAND | New 11\/2026\n\n  PRODUCT TITLE (Shopify product title):\n  CASIO G-SHOCK GDG-B100-1A5DR MUDMAN BLUETOOTH DIGITAL WATCH\n\n  PAGE TITLE (Shopify SEO title field):\n  G-SHOCK GDG-B100-1A5 Mudman Bluetooth Digital | City Chain\n\n  META DESCRIPTION (Shopify SEO description field):\n  G-SHOCK GDG-B100-1A5 MUDMAN: mud resistant, Bluetooth, step counter, 200m water resistant, 66g carbon core guard. City Chain Singapore.\n\n  TRUST GRID: 3-tile (resin band — Strap Adjustment tile removed).\n  SPEC SOURCE: casio.com\/sg product page for GDG-B100-1A5 (module 3587).\n  NOTE 1: Casio SG lists this as NEW 11\/2026 (the -1A3 page reads COMING SOON).\n  NOTE 2 — IMPORTANT: Casio's image alt text reads BLACK for BOTH the -1A3 and\n  the -1A5 (\"G-SHOCK GDG-B100-1A5 Black\"), and every published specification is\n  identical between them. Casio names no accent colour for either reference, so\n  nothing on the official pages distinguishes the two. This page therefore does\n  NOT claim a colour difference. Confirm the accent colour from the live\n  imagery or the supplier sheet and add it to the Colour row, the overview and\n  the page title before launch, or the -1A3 and -1A5 listings will read as\n  duplicates. Casio lists three references: GDG-B100-1A3, GDG-B100-1A5,\n  GDG-B100-1.\n  NOTE 3 — UNRESOLVED: Casio's Power Saving spec reads verbatim \"Power Saving\n  (Display goes blank to save power 3 hours everyday.)\" Casio gives no further\n  explanation and the module 3587 Operation Guide could not be retrieved\n  (casio.com\/sg manual service is partially suspended for maintenance). Copy\n  and FAQ state only what Casio states and direct customers to the operating\n  guide for the exact window. DO NOT describe a trigger (e.g. \"when kept in\n  the dark\") until the manual confirms it.\n  NOTE 4: POWER SOURCE IS A CR2032 BATTERY, NOT SOLAR. No Tough Solar, no\n  radio-controlled timekeeping. Time syncs via Bluetooth to a phone only.\n  NOTE 5: Carbon Core Guard is stated by Casio with no further description.\n  Copy names the construction and the bio-based carbon material only — no\n  material grade, aerospace or motorsport comparison.\n  NOTE 6 — CASIO PAGE CONFLICT (lap storage): the specification table states\n  \"up to 140 lap times per run\" while the body copy on the same page states\n  \"stores up to 100 lap times\". This page follows the SPECIFICATION figure\n  (140). Confirm with Casio SG before launch; if 100 is correct, change the\n  Training Storage row and the Key Features bullet.\n  NOTE 7: The -1A5 page gives an app detail the -1A3 page did not — the CASIO\n  WATCHES app provides access to approx. 300 world time cities, against the\n  38 held on the watch itself. Reflected in the app functions row.\n  Accent colour: #0A3282 (Casio corporate blue), matched to the other Casio builds.\n--\u003e\n\u003cstyle\u003e\n  .cc-pdp { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #1a1a1a; line-height: 1.7; }\n  .cc-pdp *, .cc-pdp *::before, .cc-pdp *::after { box-sizing: border-box; }\n  .cc-section { margin: 32px 0; padding: 0; }\n  .cc-section + .cc-section { border-top: 1px solid #e8e8e8; padding-top: 28px; }\n  .cc-pdp h2 { font-size: 11px !important; font-weight: 600 !important; letter-spacing: 0.14em !important; text-transform: uppercase !important; color: #0A3282 !important; margin: 0 0 14px 0 !important; padding: 0 !important; border: none !important; }\n  .cc-pdp p { font-size: 14.5px; color: #555; margin: 0 0 12px 0; }\n  .cc-glance { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; list-style: none; padding: 0; margin: 0; }\n  @media (min-width: 600px) { .cc-glance { grid-template-columns: repeat(3, 1fr); } }\n  .cc-glance li { background: #f0f4f8; border-radius: 6px; padding: 12px 14px; font-size: 13.5px; color: #555; margin: 0; }\n  .cc-glance li strong { display: block; font-size: 10px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: #1e3a5f; margin-bottom: 3px; }\n  .cc-benefits { list-style: none; padding: 0; margin: 0; }\n  .cc-benefits li { position: relative; padding-left: 18px; font-size: 14.5px; color: #555; margin: 0 0 10px 0; line-height: 1.6; }\n  .cc-benefits li::before { content: ''; position: absolute; left: 0; top: 9px; width: 7px; height: 7px; border-radius: 50%; background: #0A3282; }\n  .cc-tags { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0; list-style: none; }\n  .cc-tags li { background: #fff; border: 1px solid #e8e8e8; border-radius: 20px; padding: 7px 16px; font-size: 13px; color: #555; margin: 0; }\n  .cc-tags--dark li { background: #0b1d3a; border-color: #0b1d3a; color: #fff; }\n  .cc-spec-summary { background: #f0f4f8; border-radius: 6px; padding: 20px 22px; font-size: 14px; color: #555; line-height: 1.75; margin: 0 0 20px 0; }\n  .cc-spec-table { width: 100%; border-collapse: collapse; margin-bottom: 8px; }\n  .cc-spec-table caption { text-align: left; font-size: 14px; font-weight: 600; color: #0b1d3a; padding: 16px 0 8px 0; }\n  .cc-spec-table tr { border-bottom: 1px solid #e8e8e8; }\n  .cc-spec-table td { padding: 10px 0; font-size: 13.5px; vertical-align: top; }\n  .cc-spec-table td:first-child { color: #555; width: 42%; padding-right: 12px; }\n  .cc-spec-table td:last-child { color: #1a1a1a; font-weight: 500; }\n  .cc-faq { border-top: 1px solid #e8e8e8; }\n  .cc-faq-item { border-bottom: 1px solid #e8e8e8; padding: 16px 0; }\n  .cc-faq-q { font-size: 14.5px; font-weight: 600; color: #0b1d3a; margin: 0 0 8px 0; }\n  .cc-faq-a { font-size: 14px; color: #555; line-height: 1.7; margin: 0; }\n  .cc-trust { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; list-style: none; padding: 0; margin: 0; }\n  @media (min-width: 600px) { .cc-trust { grid-template-columns: repeat(3, 1fr); } }\n  .cc-trust li { text-align: center; padding: 20px 10px; background: #fff; border: 1px solid #e8e8e8; border-radius: 6px; margin: 0; }\n  .cc-trust li strong { display: block; font-size: 13.5px; color: #0b1d3a; margin-bottom: 4px; }\n  .cc-trust li span { font-size: 12px; color: #555; }\n\u003c\/style\u003e\n\u003cdiv class=\"cc-pdp\"\u003e\n\u003c!-- PRODUCT OVERVIEW --\u003e\n\u003cdiv class=\"cc-section\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eG-SHOCK GDG-B100-1A5DR\u003c\/strong\u003e is a MUDMAN, part of the MASTER OF G — LAND line built for ground that fights back. \u003cstrong\u003eMud-resistant construction\u003c\/strong\u003e seals the case against grit and dust, \u003cstrong\u003eCarbon Core Guard\u003c\/strong\u003e construction forms the core, and a bumper-guard design interlocks the case and bezel with the band so the whole watch works as one piece rather than a case bolted to a strap. The case back is engraved with the MUDMAN mole character racing across harsh terrain.\u003c\/p\u003e\n\u003cp\u003eIt is a working instrument rather than a dress watch. A \u003cstrong\u003eMIP LCD\u003c\/strong\u003e keeps the display readable, an \u003cstrong\u003eaccelerometer\u003c\/strong\u003e counts daily steps and monthly running distance, and the training functions record distance, speed, pace, calories and laps for up to \u003cstrong\u003e100 runs with 140 lap times each\u003c\/strong\u003e. \u003cstrong\u003eBluetooth\u003c\/strong\u003e links it to the CASIO WATCHES app to set the time automatically, correct run distance against your phone's GPS, and pass through call, email, calendar and reminder notifications — which the watch can signal by \u003cstrong\u003evibration\u003c\/strong\u003e rather than sound.\u003c\/p\u003e\n\u003cp\u003eDespite a \u003cstrong\u003e63.6 × 49.6 × 16.2mm\u003c\/strong\u003e case, bio-based carbon and bio-based resin keep it to \u003cstrong\u003e66 grams\u003c\/strong\u003e. Power comes from a \u003cstrong\u003eCR2032 battery lasting approximately two years\u003c\/strong\u003e, and the watch is rated to \u003cstrong\u003e200 metres of water resistance\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- AT A GLANCE --\u003e\n\u003cdiv class=\"cc-section\"\u003e\n\u003ch2\u003eAt a Glance\u003c\/h2\u003e\n\u003cul class=\"cc-glance\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003eCasio G-SHOCK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003eMUDMAN \/ Master of G — Land\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel\u003c\/strong\u003eGDG-B100-1A5DR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule\u003c\/strong\u003e3587\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Size\u003c\/strong\u003e63.6 × 49.6 × 16.2 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e66g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour\u003c\/strong\u003eYellow\/Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay\u003c\/strong\u003eMIP LCD, Digital\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction\u003c\/strong\u003eMud Resistant, Carbon Core Guard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnectivity\u003c\/strong\u003eBluetooth, CASIO WATCHES App\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Resistance\u003c\/strong\u003e200m (20 BAR)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Life\u003c\/strong\u003eApprox. 2 Years (CR2032)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- WHY YOU'LL LOVE IT --\u003e\n\u003cdiv class=\"cc-section\"\u003e\n\u003ch2\u003eWhy You'll Love It\u003c\/h2\u003e\n\u003cul class=\"cc-benefits\"\u003e\n\u003cli\u003eMud resistance is the point of a MUDMAN. The sealed construction keeps grit and dust out of the case and buttons, which is the failure mode that ends most watches used on building sites, trails and farmland.\u003c\/li\u003e\n\u003cli\u003e66 grams for a 63.6mm case is remarkably light. Bio-based carbon and bio-based resin do the work, so the size reads as presence rather than weight on the wrist.\u003c\/li\u003e\n\u003cli\u003eBluetooth means you never set the time. The watch syncs to your phone automatically through the CASIO WATCHES app, which also opens up approximately 300 world time cities against the 38 zones stored on the watch.\u003c\/li\u003e\n\u003cli\u003eThe training functions go well beyond a step count — distance, speed, pace, calories, auto and manual laps, auto pause and target alerts, with history for 100 runs and 140 laps each, and run distance correctable against your phone's GPS.\u003c\/li\u003e\n\u003cli\u003eVibration alerts let it work silently. Elapsed time, calorie targets and phone notifications can all reach you through the wrist instead of a beep, which matters in meetings and on quiet sites.\u003c\/li\u003e\n\u003cli\u003eFour daily alarms, a 38-zone world time, an interval timer with up to five settings and auto-repeat, and a 99:59'59\" stopwatch cover the practical side without needing the phone.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- PERFECT FOR --\u003e\n\u003cdiv class=\"cc-section\"\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul class=\"cc-tags\"\u003e\n\u003cli\u003eOutdoor \u0026amp; Trail Use\u003c\/li\u003e\n\u003cli\u003eRunning \u0026amp; Training\u003c\/li\u003e\n\u003cli\u003eWorksite \u0026amp; Field Work\u003c\/li\u003e\n\u003cli\u003eHiking \u0026amp; Camping\u003c\/li\u003e\n\u003cli\u003eTravel Across Time Zones\u003c\/li\u003e\n\u003cli\u003eSwimming \u0026amp; Water Sports\u003c\/li\u003e\n\u003cli\u003eG-SHOCK Collectors\u003c\/li\u003e\n\u003cli\u003eGift for Him\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- KEY FEATURES --\u003e\n\u003cdiv class=\"cc-section\"\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"cc-benefits\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMud-resistant structure\u003c\/strong\u003e — Casio's sealed construction for use in harsh, dirty conditions, keeping mud, grit and dust out of the case and buttons.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon Core Guard construction with bio-based carbon\u003c\/strong\u003e — Casio's named core structure, with the case and bezel formed from bio-based carbon and bio-based resin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBumper-guard design\u003c\/strong\u003e — the case and bezel interlock with the band, and the case back is engraved with the MUDMAN mole character.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMobile link over Bluetooth\u003c\/strong\u003e — automatic connection to the CASIO WATCHES app for auto time adjustment, watch setup, phone finder, activity history, life log and access to approximately 300 world time cities — against the 38 zones held on the watch itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccelerometer step and training functions\u003c\/strong\u003e — daily step count and monthly running distance, plus distance, speed, pace, calories, auto and manual laps, auto pause, time or calorie target alerts and a customisable training display. Stores 100 runs with up to 140 lap times each, and distance can be corrected using your phone's GPS.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration alerts\u003c\/strong\u003e — training and smartphone notifications can be signalled by vibration, which can be switched on or off.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimekeeping suite\u003c\/strong\u003e — 38 time zones (38 cities plus UTC) with automatic summer time, four daily alarms with snooze and an hourly time signal, a 1-second stopwatch to 99:59'59\" with split timing, and a countdown timer with a five-setting interval timer and auto-repeat up to 20 times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto LED backlight\u003c\/strong\u003e — red LED with afterglow and a selectable 1.5 or 3-second duration, over a MIP LCD display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShock-resistant construction with 200-metre water resistance (20 BAR)\u003c\/strong\u003e — rated for swimming, snorkelling and recreational water sports. Not rated for saturation diving.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePractical settings\u003c\/strong\u003e — 12\/24-hour format, flight mode, button tone mute, user profile, full auto-calendar to 2099 and a power-saving function.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- TECHNICAL SPECIFICATIONS --\u003e\n\u003cdiv class=\"cc-section\"\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp class=\"cc-spec-summary\"\u003eThe Casio G-SHOCK GDG-B100-1A5DR is a digital MUDMAN on module 3587 from the Master of G — Land line, built with a bio-based carbon and bio-based resin case to Carbon Core Guard construction with mud-resistant and shock-resistant structures. The case measures 63.6 × 49.6 × 16.2mm and weighs 66 grams, with mineral glass, a MIP LCD display, a red auto LED backlight and a bio-based resin band fitting 145mm to 215mm, rated to 200 metres of water resistance. An accelerometer drives step counting and training functions storing 100 runs, and Bluetooth links the watch to the CASIO WATCHES app for automatic time adjustment, access to approximately 300 world time cities, notifications and GPS distance correction. Timekeeping covers 38 time zones, four daily alarms, a 99:59'59\" stopwatch and an interval timer. Accuracy is ±15 seconds per month without the mobile link, and battery life is approximately two years on a CR2032.\u003c\/p\u003e\n\u003ctable class=\"cc-spec-table\"\u003e\n\u003ccaption\u003eCase \u0026amp; Build\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eGDG-B100-1A5DR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase \u0026amp; Bezel Material\u003c\/td\u003e\n\u003ctd\u003eBio-Based Carbon \/ Bio-Based Resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eShock Resistant, Mud Resistant, Carbon Core Guard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Size (L × W × H)\u003c\/td\u003e\n\u003ctd\u003e63.6 × 49.6 × 16.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e66g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass\u003c\/td\u003e\n\u003ctd\u003eMineral\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Resistance\u003c\/td\u003e\n\u003ctd\u003e200 Metres (20 BAR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesign\u003c\/td\u003e\n\u003ctd\u003eBumper Guard, Case \u0026amp; Bezel Interlocked with Band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Back\u003c\/td\u003e\n\u003ctd\u003eEngraved MUDMAN Mole Character\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable class=\"cc-spec-table\"\u003e\n\u003ccaption\u003eDisplay \u0026amp; Light\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Type\u003c\/td\u003e\n\u003ctd\u003eDigital, MIP LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBacklight\u003c\/td\u003e\n\u003ctd\u003eAuto LED with Afterglow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBacklight Colour\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBacklight Duration\u003c\/td\u003e\n\u003ctd\u003eSelectable 1.5 or 3 Seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable class=\"cc-spec-table\"\u003e\n\u003ccaption\u003eConnectivity \u0026amp; Sensors\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMobile Link\u003c\/td\u003e\n\u003ctd\u003eBluetooth, Automatic Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp\u003c\/td\u003e\n\u003ctd\u003eCASIO WATCHES\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp Functions\u003c\/td\u003e\n\u003ctd\u003eAuto Time Adjustment, Watch Setup, Approx. 300 World Time Cities, Notifications, Activity History, Life Log, GPS Distance Correction, Phone Finder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor\u003c\/td\u003e\n\u003ctd\u003eAccelerometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStep Counter\u003c\/td\u003e\n\u003ctd\u003eDaily Steps, Monthly Running Distance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTraining Data\u003c\/td\u003e\n\u003ctd\u003eDistance, Speed, Pace, Calories, Auto \u0026amp; Manual Laps, Auto Pause, Target Alerts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTraining Storage\u003c\/td\u003e\n\u003ctd\u003e100 Runs, Up to 140 Lap Times Per Run\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable class=\"cc-spec-table\"\u003e\n\u003ccaption\u003eFunctions\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorld Time\u003c\/td\u003e\n\u003ctd\u003e38 Time Zones (38 Cities + UTC), Auto Summer Time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStopwatch\u003c\/td\u003e\n\u003ctd\u003e1 Second, 99:59'59\" Capacity, Elapsed \u0026amp; Split\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountdown Timer\u003c\/td\u003e\n\u003ctd\u003eInterval Timer, Up to 5 Settings, 00'00\" to 60'00\", Auto-Repeat 1 to 20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarms\u003c\/td\u003e\n\u003ctd\u003e4 Daily Alarms with Snooze, Hourly Time Signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalendar\u003c\/td\u003e\n\u003ctd\u003eFull Auto-Calendar to 2099\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration\u003c\/td\u003e\n\u003ctd\u003eOn \/ Off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther\u003c\/td\u003e\n\u003ctd\u003e12\/24-Hour Format, Flight Mode, Button Tone Mute, User Profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Saving\u003c\/td\u003e\n\u003ctd\u003eDisplay Goes Blank to Save Power, 3 Hours Daily\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable class=\"cc-spec-table\"\u003e\n\u003ccaption\u003eBand \u0026amp; Power\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBand Material\u003c\/td\u003e\n\u003ctd\u003eBio-Based Resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Band Size\u003c\/td\u003e\n\u003ctd\u003e145mm to 215mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±15 Seconds Per Month (Without Mobile Link)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Source\u003c\/td\u003e\n\u003ctd\u003eCR2032 Battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Life\u003c\/td\u003e\n\u003ctd\u003eApprox. 2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- BEST MATCHED WITH --\u003e\n\u003cdiv class=\"cc-section\"\u003e\n\u003ch2\u003eBest Matched With\u003c\/h2\u003e\n\u003cul class=\"cc-tags cc-tags--dark\"\u003e\n\u003cli\u003eTechnical Shell\u003c\/li\u003e\n\u003cli\u003eBlack Tee\u003c\/li\u003e\n\u003cli\u003eCargo Trousers\u003c\/li\u003e\n\u003cli\u003eFleece Mid-Layer\u003c\/li\u003e\n\u003cli\u003eWork Jacket\u003c\/li\u003e\n\u003cli\u003eTrail Shoes\u003c\/li\u003e\n\u003cli\u003eBlack Cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- FAQ --\u003e\n\u003cdiv class=\"cc-section\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"cc-faq\"\u003e\n\u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eWhat does mud resistant actually mean?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eCasio seals the case and button openings so mud, grit and dust cannot work their way inside. On an ordinary watch that is the usual failure point — a button stops responding after a dusty job or a muddy trail. Mud resistance is separate from water resistance, and this model carries both.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eIs this watch solar powered?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eNo. The GDG-B100-1A5 runs on a CR2032 battery with an approximate two-year life. It has no solar charging and no radio-controlled timekeeping — the time is set automatically over Bluetooth through your phone instead.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eDoes it need a phone to work?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eNo. Timekeeping, 38-zone world time, the alarms, stopwatch, timer, step counter and training functions all run on the watch. The CASIO WATCHES app adds automatic time setting, access to approximately 300 world time cities, phone notifications, activity history, phone finder and GPS distance correction for your runs. Without the app, accuracy is ±15 seconds per month.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eWhy does the display go blank sometimes?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eThat is the power-saving function. Casio states that the display goes blank to save power for three hours each day. The watch keeps correct time throughout and the display returns on its own — it is not a fault. The operating guide for module 3587 sets out exactly when this happens and how to switch it off.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eHow accurate is the step count and running distance?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eSteps are measured by an accelerometer on the wrist, so the count is an estimate rather than an exact figure — that is true of any wrist-worn step counter. Running distance can be corrected against your phone's GPS through the app, which brings it closer than wrist motion alone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eCan I use it for swimming?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eYes. 200-metre (20 BAR) water resistance covers swimming, surfing and recreational water sports. It is not rated for saturation diving or use with helium-based gas mixtures. Avoid operating the buttons while the watch is submerged.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eIs 63.6mm too large for my wrist?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eIt is a large watch — 63.6 × 49.6 × 16.2mm — so measure your wrist before ordering. The band fits 145mm to 215mm. At 66 grams it is far lighter than its size suggests, but the footprint is substantial and will sit high under a close-fitting cuff.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eWhat is Carbon Core Guard?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eIt is Casio's name for the structural core used on this watch, with the case and bezel formed from bio-based carbon and bio-based resin. It is what allows a 63.6mm case to come in at 66 grams while carrying shock-resistant and mud-resistant construction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eHow long does the battery last, and can I get it replaced?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eApproximately two years on a single CR2032 cell. When it runs down, bring the watch to any City Chain outlet — having it changed by a service centre keeps the case seal correctly reseated, which protects both the 200-metre rating and the mud resistance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eCan the resin band be shortened?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eThe bio-based resin band is a buckle-and-holes design fitting 145mm to 215mm with no tooling required. Unlike a metal bracelet there are no links to remove, so there is no in-store sizing step — set it to the hole that fits and you are done.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eWhat warranty does this watch come with?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eThe GDG-B100-1A5DR comes with Casio's official 1-year warranty when purchased from City Chain Singapore, an authorised Casio retailer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- WHY BUY FROM CITY CHAIN --\u003e\n\u003cdiv class=\"cc-section\"\u003e\n\u003ch2\u003eWhy Buy from City Chain Singapore\u003c\/h2\u003e\n\u003cul class=\"cc-trust\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthorised Retailer\u003c\/strong\u003e \u003cspan\u003eOfficial Casio warranty\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic\u003c\/strong\u003e \u003cspan\u003eGenuine Casio product\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree Shipping\u003c\/strong\u003e \u003cspan\u003eAll orders within Singapore\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"CASIO","offers":[{"title":"Default Title","offer_id":67980223283415,"sku":"GDG-B100-1A5DR","price":349.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0550\/2451\/7272\/files\/Casio_GDG-B100-1A5DR.png?v=1793777071","url":"https:\/\/www.citychain.com.sg\/products\/casio-g-shock-gdg-b100-1a5dr-mudman-master-of-g-yellow-men-watch","provider":"City Chain Singapore","version":"1.0","type":"link"}