With a totally cool large-case G-SHOCK in black with a 10-year battery you won’t have to worry about for ages. The digital GD-010 offer handy features like world time and stopwatch, with a large, easy to read display and large case. The front button makes it simple to access the high-brightness LED light so you can easily read the dial, even in the dark. Made with bio-based resin and equipped with a 10-year battery, this G-SHOCK is designed to be good for the environment — and good for fashion. This black design move with ease from casual styling to work setting. Case size (L× W× H) 54.9 × 51.9 × 16.1 mm Weight 65 g Case and bezel material Bio-based Carbon / Bio-based resin Band Bio-based resin band Construction Shock Resistant Carbon Core Guard structure Water resistance 200-meter water resistance Power supply and battery life Approx. battery life: 10 years on CR2025 Glass Mineral Glass Compatible band size 145 to 215 mm World time Multi Time (4 different cities) World time 31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping Stopwatch 1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times Timer Countdown timer Measuring unit: 1/10 second Countdown range: 24 hours Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments) Alarm/hourly time signal 5 alarms (daily or one-time) Hourly time signal Light LED backlight (Super Illuminator) Auto light switch, selectable illumination duration, afterglow Light color LED:White Calendar Full auto-calendar (to year 2099) Mute feature Button operation tone on/off Accuracy Accuracy: ±15 seconds per month Other features 12/24-hour format Regular timekeeping: Hour, minute, second, pm, month, date, day