Casio Illuminator AE1500WH Series Warranty LED Backlight 5 Alarms Stopwatch Digital 10-Year 1/100-Second Men's Watch, White, Standard,

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