Black [Casio] W-218HM-5BV Men's Watch,

It can be used for a long period of time without needing to be replaced, as it lasts for 7 years. The LED illuminator ensures visibility even in dark environments. With 50m | 5 ATM water resistance, it can be safely used for light water activities. Other features include an alarm, hourly chime, auto calendar, and a 1/100-second stopwatch (chronograph).