Description
Taking the industry by storm in 2019, the GA2100 series pushed the bounds of design by offering a thin watch with an octagonal bezel and legendary G-SHOCK protection. G-SHOCK then revolutionized the series by adding a stainless-steel bezel, forging the GM2100 series. Always innovating, G-SHOCK then added Bluetooth® connectivity and Tough Solar charging to craft a steel watch beyond compare: the GBM2100 series stainless-steel watch. G-SHOCK G-STEEL combines sophisticated style with peace of mind, crafting steel watches with durable shock resistance and 200-meter water resistance (wr 20 bar). Going the extra mile, G-SHOCK manufactured the watchcase and band from bio-based resin, a material thought to reduce environmental impact. Conscientious at every level, that’s G-SHOCK G-STEEL.
Bluetooth® connectivity ensures your GBM2100-1A is always accurate, as this stainless-steel watch automatically updates the time from your smartphone. With auto summer switching for Daylight Savings Time, the sophistication of a stainless-steel G-SHOCK is combined with easy operation, making the sophistication a hands-free experience. Add in the Tough Solar charging, and you have a watch that’s not only tough but reliable for years. The GBM2100-1A maximizes comfort, style, and ease of use.
Traveling is also made easier with the GBM2100-1A. World Time allows you to view the time in 38 time zones, and the Casio Watches app makes it a cinch to switch between your Home Time City and your World Time City. Swap between your World Time City and your Home Time City quickly and easily as soon as you reach your destination.
This silver G-SHOCK watch is loaded with features. Can’t find your phone? The Phone Finder feature uses the Bluetooth® connection to trigger a tone on the phone to make it easy to find. The tone is forced to sound even if the phone is in vibrate mode. Style and performance make the GBM2100-1A a tool for daily living and a sophisticated statement of identity.
Basic Information
Case Size (L x W x H):Â 49.3 x 44.4 x 11.9 mm
Weight: 72 g
Case and bezel material: Bio-based Resin / Stainless steel
Band: Bio-based resin band
Construction: Shock Resistant
Water resistance: 200-meter water resistance
Time adjustment: Bluetooth: Connects to a smartphone and automatically adjusts the time
Power supply and battery life: Tough Solar (Solar powered)
Smartphone Link/App Connectivity Features
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
- Reminder
- Phone finder
Exterior
Glass:Â Mineral Glass
Compatible Band Size:Â 145 to 215 mm
Other:Â Neobrite
Watch Features
World Time:
- World time
- 38 time zones (38 cities + coordinated universal time)
- Auto summer time (DST) switching
- Home city/world time city swapping
Stopwatch:
- 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: Elapsed time, lap/split time
Timer:
- Countdown timer
- Measuring unit: 1 second
- Countdown range: 60 minutes
- Countdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments)
Alarm/hourly time signal:
- 5 daily alarms
- Hourly time signal
Light:
- Double LED light
- LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
- LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
Light color: LED: White
Calendar: Full auto-calendar (to year 2099)
Mute feature: Button operation tone on/off
Energy saving feature: Power Saving (display goes blank to save power when the watch is left in the dark)
Battery display/alert: Battery level indicator
Run time:
- Approx. battery operating time: 7 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)
Accuracy: ±15 seconds per month (with no mobile link function)
Other features:
- Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
- 12/24-hour format
- Date/month display swapping
- Day display (days of the week selectable in six languages)
- Regular timekeeping:
- Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (battery level, mode)
- Digital: Hour, minute, second, pm, month, date, day



