"This is watch is a very deep olive drab green color, with black pushers Shock Resistant Mud Resistant Case & buttons are sealed to prevent mud, dirt and dust from getting into the watch Auto Dual EL Backlights with Afterglow Low Temperature Resistant (-20 Degrees C) World Time; 29 time zones (48 cities), city code display, daylight saving on/off 4 Daily Alarms & 1 Snooze Alarm Countdown Timer Measuring unit: 1 second Countdown range: 1 minute to 24 hours Auto-repeat Function, Progress Beeper 1/100 Second Stopwatch (ST1) Measuring capacity: 999:59'59.99"" Measuring modes: Elapsed time, split time, 1st-2nd place times Auto Start Function 1/100 Second Stopwatch (ST2) Measuring capacity: 999:59'59.99"" Measuring modes: Elapsed time, split time, 1st-2nd place times Hourly Time Signal Auto Calendar (Pre-programmed until the year 2099) 12/24 Hour Formats Accuracy: +/-15 seconds per month Battery CR2025 Approx. battery life: 3 years Module 3031 Size of case/total weight: 52.0 x 46.3 x 16.3mm / 56g"