Casio Illuminator AE1500WH Series 10 Years LED Backlight 5 Alarms 1100 Second Stopwatch Men's Digital Watch, White, Standard, Chronograph,

Estimated 10 year lifespan with CR2032 style ensures long life before service/replacement is required. 100m/10 ATM waterproof rating ensures safety while playing in the water. Casio "Illuminator" LED backlight helps visibility in dark environments. Other features include 5 alarms, an hourly time display, and a 1/100 second stopwatch function with a measuring capacity of 23:59'60 inches.