Casio General x Digital ft. Multifunctional Men Casual Round 100m Water Resistant Watch WS-1800-2A WS1800 WS-1800 Step up your game with the Casio WS-1800 series, a budget-friendly sports watch that packs serious features. It has sports-specific interval and event timers, a 10-year battery life, and 100m water resistance for versatile use. Module / Movement 3583 (quartz) Battery Life / Accuracy Approximately 10 years (+/-30 seconds per month) Crystal Resin glass (curved) Light LED backlight (afterglow) Case / Band Material Resin case with resin band Water Resistance 100m / 10 bar Case Size Thickness: 13.8 mm Diameter: 45.0 mm Length: 48.2 mm Lug width: Integrated Other Specifications Casio General x Digital ft. Multifunctional World time (29 time zones, city code display, daylight saving on/off) 2 1-second stopwatch (up to 60/100 minutes, elapsed time, event timer) 1-second countdown timer (9 preset timing up to 60 minutes, auto-repeat) Daily alarm Hourly time signal Full auto-calendar (to year 2099) Button operation tone on/off 12/24-hour format Regular timekeeping (digital display)