Introducing the Retro octagonal GA-2100 with Smartphone Link and Tough Solar power. Featuring a sleek 48.5 × 45.4 × 11.8mm case and weighing just 51g, it's both lightweight and durable. Crafted with a carbon/resin case and bezel, along with a resilient resin band, it's engineered to withstand shocks and maintain its integrity in any environment. With a carbon core guard structure and water resistance up to 200 meters, it's ready for any adventure. Powered by SR726W X 2 batteries, it provides approximately 3 years of reliable performance. Boasting features like world time, stopwatch, timer, and 5 daily alarms, it keeps you organized on the go. The double LED light ensures clear visibility in any lighting condition, while the full auto-calendar keeps you on track up to the year 2099. Complete with a mute feature and hand shift function for easy viewing, the GA-2100 is a perfect blend of retro style and modern technology.- 48.5 × 45.4 × 11.8mm Case Size- 51g Weight- Carbon/Resin Case and Bezel　- Resin Band- Shock Resistant- Carbon Core Guard structure- 200 Meters Water Resistant- Approx. battery life: 3 years on SR726W X 2- Mineral Glass- World time: 31 time zones (48 cities coordinated universal time), daylight saving on/off- Stopwatch- Timer- Alarm/hourly time signal: 5 daily alarms- Double LED light: White- Calendar: Full auto-calendar (to year 2099)- Mute feature: Button operation tone on/off- Accuracy: ±15 seconds per month- 12/24-hour format- Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)- Regular timekeeping:*Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day)*Digital: Hour, minute, second, pm, month, date