Ambient Weather WM-5 Handheld Weather Meter w/Windspeed, Temperature, Humidity, Dew Point, Heat Index, Pressure, Altitude;

Windspeed (Current, Avg, & Max)
Temp w/ Windchill & Heat Index
Relative Humidity w/ Dewpoint
Barometric Pressure & 16-Hr History Bar Graph
Storm Audio Alarm
Altitude
Pocket-knife design
Replaceable 400 hour battery
Replaceable plastic impeller won't corrode
Comes with lanyard
Threaded for tripod mounting
High visibility case
Floats
Water resistant to 4"
Accuracy: +/- 3% Windspeed; +/- 2 F° Temp/Windchill; +/-3% rH; +/- 3°F Dew Point; +/- 3°F Heat Index; +/-3 hpa Barometric Pressure
Ranges: Wind .4-89 MPH; Temp +5° to +122°F; Windchill -22° to +158°F; Dew Point -31.2° to +155.8°F ; Heat Index +69.8 to +155.8°F; rH 0-99%; Barometer 400-1100 hpa; Altitude -650 to 9000 meters
Optional Units: Knots, MPH, KPH, M/Sec, Ft/Min, Beaufort Scale - F or C
Response Times: Current Windspeed; Ave. over 2 sec; Ave. Wind 5 sec; Max Wind 2 sec gust; Temp/windchill/rH/dew point 1 min; 15 min sampling Barometer
Power requirements: CR2032 Lithium battery (included)
Measures: 5.9 x 2.1 x .85 inches
Weighs: 3.9 oz