Casio G-Shock x GD-010 Series ft. Workstyle Men Sports Round 200m Water Resistant Watch GD-010-1D GD010 GD-010 Experience a life of convenience with a large-case G-Shock featuring a 10-year battery, handy features like world time and stopwatch, and an eco-friendly design made with bio-based resin, perfect for those who want to reduce their environmental footprint while staying stylish and on-the-go. Module / Movement 3569 (quartz) Battery Life / Accuracy Approximately 10 years (+/-15 seconds per month) Crystal Mineral crystal Light LED backlight (super illuminator, auto light switch, selectable illumination duration, afterglow) Case / Band Material Bio-based carbon / bio-based resin case with bio-based resin band Water Resistance 200m / 20 bar Case Size Thickness: 16.1 mm Diameter: 51.9 mm Length: 54.9 mm Lug width: Integrated Other Specifications Casio G-Shock x GD-010 Series ft. Workstyle Shock resistant Carbon core guard structure Multi time (4 different cities) World time (31 time zones, daylight saving on/off, home/world time city swapping) 1/100-second stopwatch (up to 24 hours, elapsed time, split time) 1/10-second countdown timer (up to 24 hours) 5 alarms (daily or one-time) Hourly time signal Full auto-calendar (to year 2099) Button operation tone on/off 12/24-hour format Regular timekeeping (digital display)