Twin Sensor This is the latest new addition to the MASTER OF G MUDMASTER Series. Mud Resist construction helps to ensure that nothing gets into the watch when down and dirty work takes you deep into the dirt and sludge. Multiple gaskets are used on the pipes that guide buttons and shafts, which keeps mud out. These pipes not only act to protect buttons from impact, they also enhance button operation. In addition, Twin Sensor capabilities provide instant access to direction and temperature information when needed under tough conditions. The face of the watch is marked with large Arabian numerals at 12, 3, 6, and 9 o'clock for easy reading. The face is illuminated by a Super Illuminator, high-brightness auto LED light to ensure high visibility under virtually any conditions imaginable. The band surface is processed to resemble a cloth band texture, and the hour and minute hands are shaped with points that make them resemble warning markers. All buttons have a checkered surface for surer operation, and the overall design is tough and rugged. Mineral Glass Neobrite Shock Resistant Mud Resistant 200-meter water resistance Case / bezel material: Resin / Stainless steel Resin Band LED backlight (Super Illuminator) Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow Digital compass (NORTH) Hand indication of north (20 seconds continuous measurement) Measures and displays direction as one of 16 points Measuring range: 0 to 359 Measuring unit: 1 Bidirectional calibration Magnetic declination correction Bearing memory Thermometer Display range: ?10 to 60C (14 to 140F) Display unit: 0.1C (0.2F) World time 31 time zones (48 cities + coordinated universal time), daylight saving on/off 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 minute to 60 minutes (1-minute increments) 5 daily alarms (with 1 snooze alarm) Hourly time signal Low battery alert Full auto-calendar (to year 2099) 12/24-hour format Button operation tone on/off Regular timekeeping Analog: 3 hands (hour, minute (hand moves every 10 seconds), second) Digital: Hour, minute, second, pm, month, date, day Accuracy: 15 seconds per month Approx. battery life: 2 years on SR927W 2 Size of case:?56.2??55.3??17.1?mm Total weight: 92 g LED:White