Casio G-Shock Digital Dial White Printed Resin Quartz Men's Watch DW5600SL-7 Imported Shock Resistant, 200 Meter Water Resistant, EL Backlight with Afterglow,Multi-function Alarm Flash Alert, Flashes with buzzer that sounds for alarms, hourly time, signal, countdown timer time up alarm, 1/100 second stopwatch,Countdown Timer Auto-repeat function, Hourly Time Signal, Auto Calendar (pre-programmed until the year 2039) 12/24 Hour Formats, Accuracy: +/- 15 seconds per month Battery CR2016, Approx. battery life: 2 years, Module 1545, Size of case/total weight: 48.9 x 42.8 x 13.4mm / 60g