Since 1983, the G-SHOCK watch collection has been refined for ultimate toughness. The octagonal GBM-2100 models, the latest in the line, blend Bluetooth® and solar power into the GM-2100 design. The bands, made from bio-based resin, are both durable and eco-friendly. These versatile watches can be worn from casual outings to business meetings. The new GBM-2100 models offer a big functional upgrade while keeping the iconic 2100 style, combining durability with 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 a clear view of digital display) - World time: 38 time zones (38 cities + UTC), auto DST switching, home/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 off in the dark to save power) - Full auto-calendar (until 2099) - 12/24-hour format - Button operation tone on/off - Date/month display swapping - Day display (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) - Approx. battery life: *7 months on rechargeable battery (Normal use after charge, no light exposure) *18 months on rechargeable battery (Stored in the dark with power save on after full charge)
Using your G-Shock GBM2100A-1A2 is a breeze. First, charge it under sunlight to activate the Tough Solar feature. To pair it with your phone, turn on Bluetooth on both the watch and your device and follow the prompts for a wireless link. The hand shift feature is handy; just press the relevant button, and the hands will move aside to show the digital display clearly. For setting the world time, select your home city and easily swap between different time zones. The stopwatch and countdown timer are great for sports or timing events. You can set up to 5 daily alarms and an hourly time signal according to your preference. When it comes to the battery, remember that it can last about 7 months with normal use after a charge, or up to 18 months if stored in the dark with the power save function on. Keep the watch clean by wiping it with a soft cloth regularly. Avoid exposing it to extreme temperatures and strong magnetic fields. If you have any issues, refer to the user manual or contact customer service.
