Skymaster Wind Meter - SM28

Features
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 hr battery
Replaceable plastic impeller
Comes with lanyard
Threaded for tripod mounting
Floats
Water resistant to 4"

Specs
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 32° 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 -500 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: CR2032 Lithium battery (included)
MEASURES: 5.9 x 2.1 x .85 inches
WEIGHS: 3.9 oz