{"product_id":"citizen-mechanical-nh9138-82l-stainless-steel-men-watch","title":"CITIZEN MECHANICAL NH9138-82L STAINLESS STEEL MEN WATCH","description":"\u003c!-- CITY CHAIN SINGAPORE — CITIZEN MECHANICAL OPEN HEART NH9138-82L --\u003e\n\u003c!-- SEO TITLE: Citizen NH9138-82L Open Heart Automatic Blue Dial | City Chain --\u003e\n\u003c!-- META DESCRIPTION: Shop Citizen NH9138-82L at City Chain Singapore. Open-heart automatic, blue dial with Roman numerals, 40mm steel case and bracelet, sapphire glass, 100m. --\u003e\n\u003c!-- URL HANDLE: citizen-nh9138-82a-open-heart-automatic-steel-bracelet-men-watch --\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: #17395C !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: #e9eff5; 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: #0F2740; 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: #17395C; }\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: #0F2740; border-color: #0F2740; color: #fff; }\n  .cc-spec-summary { background: #e9eff5; 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: #0F2740; 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; overflow-wrap: anywhere; }\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: #0F2740; 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(4, 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: #0F2740; 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\u003eCitizen NH9138-82L\u003c\/strong\u003e is the colour statement in Citizen's \u003cstrong\u003eMechanical Open Heart\u003c\/strong\u003e line. A \u003cstrong\u003eblue dial\u003c\/strong\u003e carries \u003cstrong\u003eRoman numeral markers\u003c\/strong\u003e for a formal, classical layout, set against a \u003cstrong\u003estainless steel case and bracelet\u003c\/strong\u003e so the blue is the only colour on the watch. Cut into that dial is the \u003cstrong\u003eopen-heart aperture\u003c\/strong\u003e, leaving the balance wheel visible as it swings back and forth — the detail that gives the line its name and keeps your eye coming back to it.\u003c\/p\u003e\n    \u003cp\u003eDriving it is \u003cstrong\u003eCaliber 8229\u003c\/strong\u003e, a \u003cstrong\u003emechanical automatic\u003c\/strong\u003e movement with \u003cstrong\u003e21 jewels\u003c\/strong\u003e running at \u003cstrong\u003e21,600 vibrations per hour\u003c\/strong\u003e. It winds itself from the motion of your wrist, and can also be wound by hand through the crown when it has been sitting unworn. A \u003cstrong\u003etransparent caseback\u003c\/strong\u003e shows the rest of the calibre and the winding rotor from the rear, so the movement is on display from both sides — unusual at this level.\u003c\/p\u003e\n    \u003cp\u003eThe \u003cstrong\u003e40mm case\u003c\/strong\u003e measures \u003cstrong\u003e10.7mm thick\u003c\/strong\u003e — restrained for an automatic that has to make room for a dial aperture — and is protected by \u003cstrong\u003esapphire glass\u003c\/strong\u003e, the hardest crystal material Citizen fits. Citizen specifies \u003cstrong\u003e100-metre water resistance\u003c\/strong\u003e, considerably more than most watches of this style offer, and the steel bracelet can be sized in store for a close, comfortable fit.\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\u003eCitizen\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollection\u003c\/strong\u003eMechanical Open Heart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMovement\u003c\/strong\u003eCaliber 8229 Automatic\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eCase Size\u003c\/strong\u003e40mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e10.7mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDial\u003c\/strong\u003eBlue with Roman Numerals\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDial Feature\u003c\/strong\u003eOpen-Heart Aperture\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaseback\u003c\/strong\u003eTransparent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass\u003c\/strong\u003eSapphire Glass\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eCase \u0026amp; Bracelet\u003c\/strong\u003eStainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Resistance\u003c\/strong\u003e100m\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGender\u003c\/strong\u003eGent\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\u003e\n\u003cstrong\u003eThe movement is part of the design:\u003c\/strong\u003e The open-heart aperture leaves the balance wheel on show, oscillating steadily on the dial side — the detail that makes a mechanical watch worth looking at rather than just reading.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eVisible from both sides:\u003c\/strong\u003e Sapphire glass over the aperture at the front, a transparent caseback showing the calibre and winding rotor at the rear. Most watches at this level give you one view or the other, not both.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWinds itself, or by hand when you prefer:\u003c\/strong\u003e Caliber 8229 is self-winding from wrist movement, and the crown lets you wind it manually to get it going after it has been sitting unworn.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eBlue against steel, and nothing else:\u003c\/strong\u003e The dial is the only colour on the watch — matching stainless steel case and bracelet frame it in a single clean line, so the blue carries the whole look.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDress looks without the fragility:\u003c\/strong\u003e Sapphire glass, a 10.7mm case that slips under a cuff, and 100-metre water resistance — well beyond what this style of watch usually offers — so it handles everyday life rather than only special occasions.\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\u003eCaliber 8229 Mechanical Automatic\u003c\/strong\u003e — self-winding movement with 21 jewels, beating at 21,600 vibrations per hour.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eOpen-Heart Aperture\u003c\/strong\u003e — a dial cut-out exposing the oscillating balance wheel.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eTransparent Caseback\u003c\/strong\u003e — the calibre and winding rotor visible from the rear.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eHand Winding\u003c\/strong\u003e — the movement can be wound through the crown as well as by wrist motion.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eBlue Dial with Roman Numerals\u003c\/strong\u003e — classical layout in the line's one colour option on steel.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003e40mm Stainless Steel Case\u003c\/strong\u003e — classic proportions for a men's watch.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003e10.7mm Case Thickness\u003c\/strong\u003e — restrained for an automatic with a dial aperture.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eSapphire Glass\u003c\/strong\u003e — Citizen's hardest crystal material.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eStainless Steel Bracelet\u003c\/strong\u003e — matched to the case, adjustable in store.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003e100m Water Resistance\u003c\/strong\u003e — well beyond typical specification for this style of watch.\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    \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\u003eNH9138-82L\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCollection\u003c\/td\u003e\n\u003ctd\u003eCitizen Mechanical Open Heart\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCase Material\u003c\/td\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCase Shape\u003c\/td\u003e\n\u003ctd\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCase Diameter\u003c\/td\u003e\n\u003ctd\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCase Thickness\u003c\/td\u003e\n\u003ctd\u003e10.7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eGlass\u003c\/td\u003e\n\u003ctd\u003eSapphire Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCaseback\u003c\/td\u003e\n\u003ctd\u003eTransparent\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWater Resistance\u003c\/td\u003e\n\u003ctd\u003e100 Metres\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e\n    \u003ctable class=\"cc-spec-table\"\u003e\n\u003ccaption\u003eDial \u0026amp; Display\u003c\/caption\u003e\n\u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDial Colour\u003c\/td\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMarkers\u003c\/td\u003e\n\u003ctd\u003eRoman Numerals\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDial Feature\u003c\/td\u003e\n\u003ctd\u003eOpen-Heart Aperture Exposing the Balance Wheel\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDisplay Type\u003c\/td\u003e\n\u003ctd\u003eAnalogue\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e\n    \u003ctable class=\"cc-spec-table\"\u003e\n\u003ccaption\u003eBracelet\u003c\/caption\u003e\n\u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAdjustment\u003c\/td\u003e\n\u003ctd\u003eAdjustable; In-Store Sizing Available\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e\n    \u003ctable class=\"cc-spec-table\"\u003e\n\u003ccaption\u003eMovement \u0026amp; Functions\u003c\/caption\u003e\n\u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCaliber\u003c\/td\u003e\n\u003ctd\u003eCitizen 8229\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMovement Type\u003c\/td\u003e\n\u003ctd\u003eMechanical Automatic (Self-Winding, Hand-Windable)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJewels\u003c\/td\u003e\n\u003ctd\u003e21\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e21,600 Vibrations per Hour\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFunctions\u003c\/td\u003e\n\u003ctd\u003eHours, Minutes, Seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eGender\u003c\/td\u003e\n\u003ctd\u003eGent\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\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\"\u003eDoes the NH9138-82L need a battery?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eNo. It is a mechanical automatic watch powered by Caliber 8229, which winds itself from the natural movement of your wrist. There is no battery and no light charging involved.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eWhat exactly am I looking at through the opening in the dial?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eThe balance wheel — the component that oscillates back and forth to regulate the watch's timekeeping. Citizen cuts an aperture in the dial so it stays visible while you wear the watch, which is where the Open Heart name comes from.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eCan I see the movement from the back as well?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eYes. The caseback is transparent, so the rest of the calibre and the winding rotor are visible from the rear. Between that and the dial aperture, you can watch the movement working from either side.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eCan I wind it by hand?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eYes. Caliber 8229 winds automatically from wrist motion and can also be wound through the crown. A manual wind is the quickest way to start it after it has been sitting unworn.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eWill it keep running if I don't wear it every day?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eLike any automatic watch, it stores energy only while being worn or wound, so it will eventually stop if left unworn. A few turns of the crown or some wrist movement starts it again, and you will need to reset the time.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eCan I wear it around water?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eCitizen specifies 100 metres of water resistance for this model, which comfortably covers handwashing, rain, splashes and everyday contact with water. Avoid operating the crown while the watch is wet.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eHow does a 40mm case wear?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003e40mm is the middle of the range for a men's watch and suits most wrists. At 10.7mm it is notably trim for an automatic with a dial aperture — many open-heart watches run thicker to make room for one. We recommend trying it on at any City Chain store.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eCan the steel bracelet be adjusted?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eYes. Links can be removed or added where compatible for a more comfortable fit. City Chain Singapore offers in-store bracelet adjustment — please bring your warranty book with you.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cc-faq-item\"\u003e\n\u003cp class=\"cc-faq-q\"\u003eWhat warranty is included?\u003c\/p\u003e\n\u003cp class=\"cc-faq-a\"\u003eThis model comes with a \u003cstrong\u003e3-year warranty\u003c\/strong\u003e when purchased from City Chain Singapore, an authorised Citizen retailer. Keep your warranty documentation and proof of purchase for any future servicing.\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\u003e100% genuine Citizen timepieces\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e3-Year Warranty\u003c\/strong\u003e\u003cspan\u003eOfficial warranty coverage\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFree Shipping\u003c\/strong\u003e\u003cspan\u003eWithin Singapore\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBracelet Adjustment\u003c\/strong\u003e\u003cspan\u003eIn-store assistance\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"CITIZEN","offers":[{"title":"Default Title","offer_id":67808814661847,"sku":"NH9138-82L","price":534.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0550\/2451\/7272\/files\/Citizen_NH9138-82L.png?v=1792396448","url":"https:\/\/www.citychain.com.sg\/products\/citizen-mechanical-nh9138-82l-stainless-steel-men-watch","provider":"City Chain Singapore","version":"1.0","type":"link"}