Casio - G-Shock - "G-Force" Military Concept - Black Digi Resin - The new military inspired series represents some of the very best of the tough and durable designs from the G-Shock ORIGIN and MASTER OF G line-ups. Featuring a stealth, matte black finish to the band and case including the watch buttons that are ion plated to a black finish. Other key features included are 12/24 Hour Formats, Flash Alert and a Countdown Timer. 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 - Measuring capacity: 00'00"00-59'59"99 (for the first 60 minutes) - 1:00'00-23:59'59 (after 60 minutes) - Measuring Unit: 1/100 second (for the first 60 minutes) - 1 second (after 60 minutes) - Measuring mode: elapsed time, split time, 1st-2nd place times - Countdown Timer - Measuring unit: 1 second - Countdown range: 24 hours - Countdown start time setting range: 1 second to 24 hours (1-second increments and 1-hour increments) - 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: DW5600CS 48.9 x 42.8 x 13.4mm / 60g