These new models pack Twin Sensor and temperature and direction readings into a 200M water resistant design that is perfect for sports work or other activities that involve water. In addition to world time stopwatch alarm and other basic timekeeping functions these models also include a direction sensor and temperature sensor. Direction readings and time are indicated by large easy-to-read figures. A large LCD is divided into three segments for a clear easy-to-understand presentation of data. Mineral glass is used to protect against scratching.Measuring unit: 1 degree10 seconds continuous measurementGraphic direction pointerBearing Sensor CorrectionMagnetic Declination correctionThermometerDisplay range: -10 to 60 C (14 to 140 F)Display unit: 0.1 C (0.2 F)EL Backlight with AfterglowWorld Time29 times zones (48 cities) city code display daylight saving on/off4 Daily Alarms and 1 Snooze AlarmCountdown TimerMeasuring unit: 1 secondCountdown range: 24 hoursCountdown start time setting range: 1 minute to 24 hours (1-hour increments and 1-minute increments)Others: Auto Repeat1/100 second stopwatchMeasuring capacity: 59'59.99"Measuring modes: Elapsed time split time 1st-2nd place timesHourly Time SignalAuto Calendar (pre-programmed until the year 2099)12/24 Hour FormatButton operation tone on/offAccuracy: +/-20 seconds per month (with no signal calibration)Storage Battery CR2025Approx. battery life: 3 yearsResin BandModule 3157