Heat Stress Stop Watch with ISO Certificate

• Measures temperature and humidity, and calculates heat index as well as dew point
• Combines air temperature and relative humidity measurements in an attempt to determine the human-perceived equivalent temperature or "how hot it feels"
• Calendar mode displays day, date and time
• Stopwatch/chronograph mode with 1/100 second resolution
• Fastest/Slowest/Average Lap recall
• 99 lap counter with 30 lap/split memory
• Dimensions
• 12 or 24 hour clock operation

Specifications:
Air Temperature Range: -5 to 50°C (23 to 122°F)
Humidity Range: 1% - 99% RH
Lap Memory: 30 laps
Heat Index Range: 70 to 122°F (22 to 50°C)
Temperature Range: 23 to 122°F (-5 to 50°C)
Humidity Range: 1 to 99% RH
Dimensions: 2.65 x 3.6 x 0.9" (67.5 x 92 x 23 mm)
Weight: 2.93 oz (83 g)