Casio G-Shock GBA-900-1A6DR black purple Bluetooth GPS MIP LCD step counter 200m
Casio GBA-900-1A6DR G-Squad fitness tracking workout logs interval timers
Casio G-Shock GBA-900-1A6DR Super Illuminator shock resistant athletic

CASIO G-SHOCK SPORTS GBA-900-1A6DR G-SQUAD PURPLE BLACK WATCH

GBA-900-1A6DR

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  • 1 Year Warranty

The GBA-900-1A6DR is the colour-pop standout in G-Shock's G-Squad fitness lineup — a black analog-digital case accented with translucent purple buttons and metallic teal index markers that give it a cyberpunk-inflected personality the all-black GBA-900-1A and red GBA-900-4A can't touch. It's a deliberately expressive colourway on a serious fitness platform: Bluetooth step tracking, GPS-corrected distance, auto lap, 45-run training memory, and a MIP digital display — all wrapped in a watch that looks like it belongs in a sneaker store as much as it does on a running track. The purple-and-teal combination works especially well against dark outfits, where the colour accents catch light without overwhelming the overall look.

The GBA-900 runs Casio's Module 5641, combining analog hands (with hand shift) and a MIP LCD for the digital readout — giving you an analog watch face for daily wear and a full-data fitness display for training. The step counter calculates daily steps, distance, and calories including basal metabolic rate, with a step goal progress gauge at 12 o'clock and a five-stage exercise intensity indicator always visible on the dial. GPS distance calibration through your phone lets the built-in accelerometer track pace and distance independently on familiar routes. At 61 grams with 200-metre water resistance and a soft urethane band, it handles the transition from morning run to office desk to evening gym without needing a strap change.

At a Glance

Case ColourMatte Black Resin
Band ColourMatte Black Resin (Soft Urethane)
Button ColourTranslucent Purple/Violet
Index MarkersMetallic Teal/Turquoise Batons
Bezel MarkersTeal Metallic Accents
HandsLuminous Green-Tinted
Subdial at 9Purple Ring — Bluetooth / ALM SIG
Indicator at 12Step Goal Progress (MIN / MAX)
Digital DisplayInverted MIP LCD at 6 o'clock
Dial TextWhite "CASIO" · "G-SHOCK" · "STEP TRACKER" · "SHOCK RESIST"
BacklightDouble LED Super Illuminator
GenderUnisex

Why You'll Love It

  • The purple-and-teal accent combination on a black base is one of the most distinctive colourways in the entire G-Squad range — it reads as stylish rather than sporty, which means you'll actually wear it outside the gym.
  • Analog hands for daily timekeeping, MIP digital display for training data. You get the look of a proper watch with the functionality of a fitness tracker, without the compromises of either format alone.
  • The step goal progress gauge at 12 o'clock and exercise intensity indicator are always visible on the analog face — no button presses or mode switching to check your daily activity.
  • GPS distance calibration means accurate pace and distance tracking on familiar routes without carrying your phone. Calibrate once, run phoneless after that.
  • At 61 grams with a soft urethane band, it's light enough for long runs and comfortable enough for all-day wear. The band doesn't trap sweat the way stiffer resin straps do.
  • The translucent purple buttons and teal markers catch light at different angles, giving the watch a shifting, layered appearance that flat-colour G-Shocks don't have.

Perfect For

Running & Jogging Streetwear Stacking Step Tracking Gym Sessions Urban Training Night Runs Sneaker Culture Gift for Active Lifestyles

Key Features

  • Bluetooth smartphone link with CASIO WATCHES app — Auto time sync, GPS distance calibration, training data review, life log management, and simple notifications (tone alert) all managed from your phone. The app also enables Strava sync for sharing runs.
  • Built-in accelerometer with auto lap — Tracks distance, speed, pace, and calories once GPS-calibrated. Auto lap marks every set distance automatically, with 45-run memory storing lap/split data, total time, distance, average pace, and calories per run.
  • MIP LCD digital display — The digital readout at 6 o'clock uses Memory-in-Pixel technology for superior sunlight readability. The analog hands handle everyday timekeeping while the MIP display shows training data, date, and function modes.
  • Hand shift feature — Analog hands physically retract when you access digital functions, clearing the view of the display at 6 o'clock. They return to the correct time automatically when you exit.
  • On-dial fitness indicators — Step goal progress at 12 o'clock (MIN/MAX gauge) and five-stage exercise intensity are always visible without switching modes. You can glance at your wrist mid-conversation and know exactly where you stand for the day.
  • Double LED Super Illuminator — Separate LEDs light the analog face and the MIP digital display independently, with auto light, selectable duration (1.5s or 3s), and afterglow. Both fire white for consistent nighttime readability.

Technical Specifications

The GBA-900-1A6DR is a Bluetooth-connected analog-digital G-Squad fitness watch running Casio's Module 5641. It features analog hands with hand shift, a MIP LCD, built-in accelerometer for step and training tracking, and on-dial fitness indicators. Case dimensions are 51.3 × 48.9 × 16.6 mm at 61 g, with 200-metre water resistance and approximately 2-year battery life on a CR2025 cell.
Case & Build
Model Number GBA-900-1A6DR
Module 5641
Case Material Resin
Glass Mineral Glass
Case Size (L × W × H) 51.3 × 48.9 × 16.6 mm
Weight 61 g
Construction Shock Resistant
Water Resistance 200 Metres (20 BAR)
Band
Material Resin (Soft Urethane)
Colour Black
Clasp Tang Buckle
Movement & Power
Movement Type Quartz Analog-Digital
Analog Display 2 hands (hour, minute — moves every 20 seconds)
Digital Display MIP LCD (hour, minute, second, AM/PM, month, date, day)
Accuracy ±15 seconds per month (without Bluetooth sync)
Battery CR2025
Battery Life Approx. 2 years
Power Saving Yes
Low Battery Alert Yes
Display & Light
Digital Display Type Memory-in-Pixel (MIP) LCD, Inverted
Backlight Double LED Super Illuminator (Face + Digital), Afterglow
Auto Light Yes (selectable 1.5s or 3s duration)
LED Colour White
Connectivity & Smart Features
Bluetooth Yes (Auto connection to smartphone)
Compatible App CASIO WATCHES (iOS / Android)
Notifications Simple notification (tone alert only)
Phone Finder Yes
Auto Time Sync Yes (via Bluetooth)
World Time Dual time (home city swap); 300+ cities via app
Airplane Mode Yes
Fitness & Training
Sensor Built-in Accelerometer
Step Counter Yes (daily steps, calories incl. BMR, distance)
Step Goal Indicator Gauge at 12 o'clock (MIN / MAX)
Exercise Intensity 5-stage indicator on dial
Training Memory Up to 45 runs (lap/split, distance, pace, calories per run)
Auto Lap Yes (set distance trigger, auto notification)
GPS Distance Correction Via smartphone GPS (initial calibration)
Strava Compatible Yes (via CASIO WATCHES app sync)
Other Functions
Stopwatch 1/100-second (up to 60 min) / 1-second (after 60 min), 24-hour capacity; lap/split, distance/pace display
Countdown Timer Interval timer (up to 5 intervals, 1–20 repeats, 5-second countdown auto start)
Alarm 5 daily alarms + hourly time signal
Calendar Full auto-calendar to 2099
Hand Shift Yes (hands clear digital display on demand)
Time Format 12/24-hour
Button Tone On/Off (mute function)

Best Matched With

Black Running Shorts Purple Dri-Fit Tee Teal Sneakers Black Joggers Dark Hoodie Charcoal Windbreaker Black Tech Pants

Frequently Asked Questions

What's the difference between the GBA-900-1A6DR (purple/teal) and the GBA-900-1A (all-black)?
Identical specs — same Module 5641, same fitness functions, same case dimensions and weight. The only difference is colour. The GBA-900-1A6DR has translucent purple buttons, metallic teal baton indexes, and a purple subdial ring on a black base — a much more expressive, streetwear-leaning aesthetic. The GBA-900-1A is fully blacked out for a stealthier, gym-only look. Choose the 1A6 if you want your G-Squad to double as a style piece; choose the 1A if you want it to disappear.
Which GBA-900 should I buy? A quick buying guide.
All GBA-900 variants run Module 5641 with identical fitness and smart features. The GBA-900-1A6DR (purple/teal) is the most fashion-forward. The GBA-900-4A (red) is the boldest and most visible for outdoor runs. The GBA-900-1A (all-black) is the safest, most versatile option. The GBA-900CB-1A (black with carbon-look band) adds texture without colour. Pick based on wardrobe and personality — they're all the same watch inside.
How does the GBA-900 compare to the newer GBA-950?
The GBA-950 is the direct successor. It adds an origami-engineered band (better wrist fit), carbon fibre-reinforced case, bio-based resin (sustainability), phosphorescent Neobrite lume, and a lighter weight (53g vs 61g). The GBA-900 uses a conventional resin case and standard soft urethane band. Both share the same core fitness functions — Bluetooth, step tracking, GPS distance correction, auto lap, 45-run memory, and hand shift. The GBA-950 is the upgrade if fit and materials matter; the GBA-900 is the value pick if they don't.
How does this compare to the GBD-200?
The GBA-900 is analog-digital (watch hands + MIP LCD). The GBD-200 is pure digital (full MIP display). The GBD-200 offers full smart notifications with vibration and deeper training memory (100 runs vs 45). The GBA-900 has only tone-alert notifications and fewer stored runs, but offers a watch-face aesthetic with always-visible step goal and exercise intensity gauges on the analog dial. Choose the GBA-900 if you want a watch that looks like a watch; choose the GBD-200 if you prioritise training data depth and notification content.
Does the GBA-900-1A6DR have built-in GPS?
No. It calibrates distance via your smartphone's GPS through the CASIO WATCHES app. Once calibrated, the built-in accelerometer tracks distance, pace, and speed independently — so you can run phoneless on routes you've already mapped. No built-in GPS keeps the weight at 61g and the battery at 2 years.
Can I sync my runs to Strava?
Yes. The CASIO WATCHES app connects to Strava, so your training data — distance, pace, lap times, and calories — can be pushed to your Strava feed automatically after syncing.
Can I swim with this watch?
Yes. The GBA-900-1A6DR is rated to 200 metres (20 BAR), which covers swimming, snorkelling, and recreational surface water sports. It is not rated for scuba diving. The step counter and training functions are designed for land-based activities.
What does "hand shift" mean?
When you access digital functions (stopwatch data, step counts, timer), the analog hour and minute hands physically rotate out of the way so they don't block the MIP digital display at 6 o'clock. They return to the correct time position automatically when you exit the function.
What warranty does this watch come with?
The GBA-900-1A6DR comes with Casio's official 1-year warranty when purchased from City Chain Singapore, an authorised Casio retailer.

Why Buy from City Chain Singapore

Authorised Retailer Official Casio warranty
100% Authentic Genuine Casio product
Free Shipping Within Singapore
Secure Checkout Visa, Mastercard, PayLater

Extra $20 OFF with min. $300 spend
Use Code: FORYOU20

Case / bezel material: Resin
Resin Band
Shock Resistant
Mineral Glass
200-meter water resistance
Double LED light
LED light for the face (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED backlight for the digital display (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
Mobile link (Automatic connection, wireless linking using Bluetooth®)
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents)
Lifelog calculation function (Calorie and distance calculations based on step count), Including basal metabolic rate Daily data display: Step count, calorie, distance
User profile creation
Airplane mode
Dual time (Home city time swapping)
1/100-second stopwatch
Measuring capacity:
00'00''00~59'59''99 (for the first 60 minutes)
1:00'00~23:59'59 (after 60 minutes)
Measuring unit:
1/100 second (for the first 60 minutes)
1 second (after 60 minutes)
Measuring modes: lap/split timing, distance/pace display, auto/manual lap timing auto lap notification
Memory capacity: Up to latest 45 records (measurement start month, date, hour, minute, lap/split times, total time, distance, average pace, calories burned, lap number, time, distance, average pace of each lap/split)
Countdown timer
Timer for interval measurement (up to five time settings)
Measuring unit: 1 second
Input range: 00'00'' to 60'00'' (1-second increments)
Others: Auto-repeat, 5-second countdown auto start, repeat (1 to 20 times)
5 daily alarms
Hourly time signal
Low battery alert
Power Saving
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off
Regular timekeeping: Hour, minute, second, am, pm, month, date, day
Accuracy: ±15 seconds per month (with no mobile link function)
Approx. battery life: 2 years on CR2025

Size of Case: 51.3×48.9×16.6mm
Total Weight: 61g

For online purchase, you can have bracelet or leather strap adjustments done at any City Chain store. Please bring along your warranty book for the service.

Delivery within Singapore | Order by 11AM
(Checkout options may vary depending on minimum order requirements)

• Free Standard Delivery (3 business days)
• Free Next Day Delivery
• Express Delivery at $30 (order by 2PM)
• Click & Collect (ready in 2–3 business days)

Weekend & Public Holiday Orders
Orders placed during this time will be processed on the next business day.


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