Embrace a sleek, blacked-out look with a G-SHOCK that exudes strength, sophistication, and style. Featuring a black ion-plated metal bezel, this timepiece makes a bold and fashionable statement, showcasing your impeccable design taste. Choose between the GM-2100 with its iconic octagonal bezel or the GM-110 with its oversized round case, both offering a striking all-black appearance with a luxurious touch and adaptable cool aesthetic. No matter which you choose, you'll embody an effortlessly chic vibe, ready to accompany you on any adventure. - 51.9 × 48.8 × 16.9mm Case Size - 93g Weight - Resin Band, Bezel and Case - Shock Resistant - Magnetic Resistant - 200 Meters Water Resistant - Approx. battery life: 3 years on SR927W X 2 - Mineral Glass - World time: 31 time zones (48 cities coordinated universal time), daylight saving on/off, Home city/World time city swapping - Stopwatch - Timer - LED light (Super Illuminator) - Calendar: Full auto-calendar (to year 2099) - Mute feature: Button operation tone on/off - Accuracy: ±15 seconds per month - 12/24-hour format - Regular timekeeping: *Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (stopwatch indicator) *Digital: Hour, minute, second, pm, month, date, day