Case / bezel material: Stainless steelTough Leather BandMineral Glass / Spherical Glass100-meter water resistanceElectro-luminescent backlight Auto light switch, afterglowThermometer Display range: -10 to 60 °C (14 to 140 °F) Display unit: 0.1 °C (0.2 °F) Thermometer Measurement Timing: During each even-numbered minute *Changeover between Celsius ( °C) and Fahrenheit ( °F)World time 30 time zones (50 cities), city code display, daylight saving on/off1/100-second stopwatches Measuring capacity: 99:59'59.99'' Measuring unit: 1/100 second (the display for the first 60 minutes) 1 second (the display after 60 minutes) Measuring modes: Single stopwatch mode: lap times, total elapsed time Dual stopwatch mode: two independent lap time measurements, lap time differential Memory capacity: 50 records (used for lap times and total elapsed time) Other: Lap numbers (01 to 99); best lap time and lap number in newest logCountdown timer Measuring unit: 1 second Countdown range: 100 hours Countdown start time setting range: 1 minute to 100 hours (1-minute increments and 1-hour increments) Other: Auto-repeatDaily alarmHourly time signalAuto-calendar (to year 2099)12/24-hour formatButton operation tone on/offRegular timekeeping Analog: 2 hands (Hour, minute;hands move every 20 seconds) Digital: Hour, minutes, seconds, am/pm, month, date, dayAccuracy:±30 seconds per monthApprox. battery life: 3 years on SR927W X 2 
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