Introducing the G-Shock GM2100-1A Metal Covered Silver 'CasiOak', a timeless fusion of elegance and resilience. With a compact 49.3 × 44.4 × 11.8mm case size and a weight of 72g, it offers durability without compromising on style. Crafted with a combination of resin and stainless steel for the case and bezel, along with a resin band, it's designed to withstand shocks and maintain its integrity in any situation. Water-resistant up to 200 meters, it's ready for any adventure. Powered by SR726W X 2 batteries, it provides approximately 3 years of reliable performance. Featuring mineral glass and a range of functions including world time, stopwatch, timer, and alarms, it ensures you're always on schedule. The double LED light system ensures clear visibility in any lighting condition, while the full auto-calendar keeps you organized up to the year 2099. Complete with a mute feature for button operation tone control and precise timekeeping, the GM2100-1A is the perfect blend of sophistication and functionality for the modern enthusiast. - 49.3 × 44.4 × 11.8mm Case Size - 72g Weight - Resin/Stainless steel Case and Bezel - Resin Band - Shock Resistant - 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 - Double LED light - 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