Unverified reference candidate
Casio
GMC-B2100D-1A
- Case dimensions (L×W×H)
- 51.3 × 46.3 × 12.4 mm
- Weight
- 171 g
- Case and bezel material
- Stainless steel
- Construction
- Shock Resistant
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Source facts, when present, require editorial review. The image source and display method are identified with the illustration.
Model-level source evidence
These manufacturer details describe the model family. The manufacturer uses a regional SKU; this record has not passed exact-variant editorial review.
Distributor product details
These labeled facts were extracted automatically from the Casio Australia distributor for this exact source and reference. They require independent review and are not a published editorial profile.
- Case dimensions (L×W×H)
- 51.3 × 46.3 × 12.4 mm
- Weight
- 171 g
- Case and bezel material
- Stainless steel
- Construction
- Shock Resistant
- Water resistance
- 200-meter water resistance
- Power supply and battery life
- Tough Solar (Solar powered)
- Crystal
- Mineral Glass
- Compatible band size
- 150 to 205 mm
- World time
- Dual time (Home City time swapping)
- Stopwatch
- 1-second stopwatch Measuring capacity: 23:59'59. Measuring modes: Elapsed time, split time
- Timer
- Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
- Alarm/hourly time signal
- Daily alarm
- Light
- LED light (Super Illuminator) Afterglow
- Light color
- LED:White
- Calendar
- Full auto-calendar (to year 2099)
- Accuracy
- Accuracy: ±15 seconds per month (with no mobile link function)
- Band
- Stainless Steel Band,Solid Band,One-touch 3-fold Clasp
- Time adjustment
- Bluetooth: Connects to a smartphone and automatically adjusts the time
- Smartphone Link feature
- Mobile link (Wireless linking using Bluetooth®)
- Apps
- CASIO WATCHES
- App connectivity feature
- Auto time adjustment,Easy watch setting,Approximately 300 world time cities,Time & place,Phone finder
- Glass
- Mineral Glass
- Crown
- Screw Lock Crown
- Other
- Neobrite
- Energy saving feature
- Power Saving (hands stop to save power when the watch is left in the dark)
- Battery display/alert
- Battery level indicator
- Run time
- Approx. battery operating time: 5 months on rechargeable battery (operation period with normal use without exposure to light after charge) 18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
- Other features
- Regular timekeeping: Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 3 dials (mode and battery, dual time/stopwatch/countdown timer/alarm hour and minute, day),Day indicator,Regular timekeeping: Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 3 dials (dual time hour and minute, dual time 24-hour, day)
Observed 2026-10-03 · Regional scope: Australia · Unverified extraction.
Original manufacturer wording is retained for source data without a reviewed translation.
Recorded discovery details.
Official discovery source
The exact token was retained from a stored official manufacturer URL or feed. The source supports discovery, but does not by itself verify every model detail.
Open official manufacturer page ↗Source record: sitemap-casio · Publication eligible: no.
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As an Amazon Associate I earn from qualifying purchases.
Affiliate link: WatchesAtlas may earn a commission from qualifying purchases, at no extra cost to you.
As an Amazon Associate I earn from qualifying purchases.
Affiliate link: WatchesAtlas may earn a commission from qualifying purchases, at no extra cost to you.
As an Amazon Associate I earn from qualifying purchases.
Affiliate link: WatchesAtlas may earn a commission from qualifying purchases, at no extra cost to you.
As an Amazon Associate I earn from qualifying purchases.
Affiliate link: WatchesAtlas may earn a commission from qualifying purchases, at no extra cost to you.
As an Amazon Associate I earn from qualifying purchases.
These are discovery candidates, not verified alternatives or product variants.