A striking piece, this G-Shock GA2100-1A2 Neon Accent Series 'CasiOak' is unlike any other. Crafted in comfortable resin with a midnight blue colour that is almost black, this piece is versatile and can be worn with a variety of different outfits. Light blue highlights stand out confidently in the watch to create a neon effect. Here, style does not compromise on practicality, this watch features all the beloved functions of a Casio such as a day window, timer, light and immense durability to get you through any adventure. . - 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 - 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