Features Basic Specs Shock Resistant Water resistant up to 200 Meters / 600 Feet Auto Neon Illuminator (Black light LED) with Afterglow Neo-brite luminous hands and markers World Time: 31 time zones (48 cities + UTC), city code display, daylight saving on/off 4 Daily Alarms and 1 Snooze Alarm Hourly Time Signal Full Auto-Calendar (pre-programmed until the year 2099) 12/24 Hour Formats Button operation tone on/off Accuracy: +/- 15 seconds per month Battery: SR927W X 2 Approx. Battery Life: 2 years Module: 5302 Digital Compass Measures and displays direction as one of 16 points Measuring range: 0 to 359 degrees Measuring unit: 1 degree 20 seconds continuous measurement Hand Indication of North Bidirectional calibration Magnetic declination correction Bearing MemoryThermometer Display range: -10 to 60 C (14 to 140 F) Display unit: 0.1 C (0.2 F) 1/100 Second Stopwatch Measuring capacity: 23:59''59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times Countdown Timer Measuring unit: 1 second Countdown range: 60 minutes Countdown start time setting range: 1 to 60 minutes (1-minute increments) Size of Case (mm) 50.8 x 52.1 x 16.7 Total Weight (g) 120