Since 1983, G-SHOCK has been constantly upgrading its line of robust watches to guarantee unmatched toughness. The latest addition to this legacy is the GBM-2100 series. It showcases an octagonal design and combines Bluetooth® and solar features with the GM-2100 model. The straps, made from bio-based resin, are long - lasting and eco - friendly. Thanks to their versatile design, these watches can easily fit from casual to formal occasions. The GBM-2100 models represent a huge step forward in functionality within the famous 2100 series, offering both durability and great looks. - Module No. 5729 - 49.3 x 44.4 x 11.9mm Case Size - 72g Weight - Shock resistant (G - SHOCK) - Tough Solar (Solar powered) - Double LED light - Mobile link (Wireless linking using Bluetooth®) - Hand shift feature (Hands move aside for an unobstructed digital display view) - World time: 38 time zones (38 cities + coordinated universal time), auto summer time (DST) switching, home city/world time city swapping, city code and name display, daylight saving on/off - Stopwatch - Countdown Timer - 5 Daily Alarms - Hourly Time Signal - Battery Level Indicator - Power Saving (Display turns blank in the dark to save power) - Full auto - calendar (to year 2099) - 12/24 - hour format - Button operation tone on/off - 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) *Digital: Hour, minute, second, pm, month, date, day - Accuracy: ±15 seconds per month (without mobile link function) - Approx. battery operating time: *7 months on rechargeable battery (Normal use after charge without light exposure) *18 months on rechargeable battery (Stored in total darkness with power save on after full charge)








Using your G - Shock GBM2100 - 1A watch is a breeze. To set the time, you can use the mobile link feature via Bluetooth® to sync with your phone. For regular timekeeping, the watch shows both analog and digital time. You can easily switch between the 12 - hour and 24 - hour format. The stopwatch and countdown timer are great for sports or other timed activities. Just press the corresponding buttons to start and stop them. The 5 daily alarms and hourly time signal can help you stay on schedule. To save power, the watch will turn off the display when left in the dark. When it comes to maintenance, keep the watch away from extreme temperatures and moisture. Wipe it with a soft, dry cloth regularly. If you're not using the watch for a long time, activate the power - saving mode. The battery usually lasts a long time, but if it runs out, you can recharge it. And don't forget, the watch is shock - resistant, so it can handle a bit of rough use, but try not to drop it too hard.