Casio Illuminator Alarm Chronograph Clear Blue Digital Watch LA-20WHS-2A

5-Year Battery life w/ included CR1616 model battery provides long-life use, 1/100-Second Stopwatch (Chronograph) function with measuring capacity of 59'59.99", LED Illuminator light provides additional visibility in darker environments, Additional features include an Auto-Calendar, Daily Alarm, and Hourly Time Signals