ULTRAK 830 Heat Index Stopwatch from $40.95 Qty. Sold Out Accurately calculates temperature, humidity, heat index and dew point 30 dual split recallable memory Measures to 10 hours with 1/100 second resolution Presettable countdown timer with auto repeat function Time, calendar and alarm LED backlight Solar powered with back-up lithium battery Water resistant Five-year warranty Ultrak 830 Instructions