Reed Instruments SW700 6-in-1 Stopwatch: Temperature, Humidity, Heat Index, Stopwatch, Calendar and Clock

The REED SW700 Heat Stress Stopwatch utilizes both air temperature and relative humidity measurements to calculate heat index and dew point—useful for determining the “feels like” temperature, or human-perceived equivalent temperature. This stopwatch also features a 10 hour countdown timer, audible alarms as well as a silent operation option, 99 lap counter with 30 lap/split memory, and fastest/slowest/average lap recall. The SW700 also features an backlit LCD display, both solar and battery power options and an IPX4 water resistance rating. Includes batteries and lanyard.