Casio #F91W-1 Men's Special Package Deal (3 Classic Chronograph Alarm Watches) Micro Light, Daily Alarm 1/100 second digital stopwatch( Measuring capacity: 59'59.99", Measuring modes: Net time, split time, 1st-2nd place times) Hourly Time Signal, Auto Calendar Accuracy: +/-30 seconds per month, Water Resistant - 30M Battery CR2016, Approx. battery life: 7 years, Module 593