Casio Twin Sensor Watch. This watch has twin sensor capability Digital Compass and Thermometer. It also is low temperature resistant. It has EL Backlight with World time, 5 daily alarms w/Snooze Alarm, 1/100 second stopwatch and countdown timer. 200M Water Resist. Black Band. Measuring unit: 1 degree 10 seconds continuous measurement Graphic direction pointer Bearing Sensor Correction Magnetic Declination correction Thermometer Display range: -10 to 60 C (14 to 140 F) Display unit: 0.1 C (0.2 F) EL Backlight with Afterglow World Time 29 times zones (48 cities), city code display, daylight saving on/off 4 Daily Alarms and 1 Snooze Alarm Countdown Timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-hour increments and 1-minute increments) Others: Auto Repeat 1/100 second stopwatch Measuring capacity: 5959.99" Measuring modes: Elapsed time, split time, 1st-2nd place times Hourly Time Signal Auto Calendar (pre-programmed until the year 2099) 12/24 Hour Format Button operation tone on/off Accuracy: +/-20 seconds per month (with no signal calibration) Storage Battery CR2025 Approx. battery life: 3 years