Casio Edifice Digital Watch for Him With Thermometer Imported Thermometer-Display range: -10 to 60 C (14 to 140 F), Display unit: 0.1 F, (0.2 C),Thermometer measurement timing: During each even-numbered minute 100M Water Resistant, Auto EL Backlight with Afterglow, World Time-30 time zones (50 cities), city code display, daylight saving on/off Daily Alarm, Countdown Timer, Dual 1/100 Second Stopwatches, 1/100 second (for the first 60 minutes) Hourly time signal, Auto-calendar (pre-programmed until the year 2099), 12/24 Hour Formats Accuracy: +/-30 seconds per month, Battery SR927W x 2,Approx. battery life: 2 years, Module 4334