Skywatch Xplorer 4

Skywatch Xplorer 4 Wind Meter is the ultimate in the Windmate series. This compact and rugged unit not only measures windspeed and temperature, but has an altimeter / barometer and digital compass (which is useful in determining wind direction). With a press of the button, scroll through the air pressure for the past 24 hours; an essential feature for judging changing conditions. Designed in Switzerland.
Features:
Windspeed
Max windspeed
Temperature
Windchill
Digital compass
Barometric air pressure
24-hour history of pressure
Altitude
Backlight
Stainless steel back
Replaceable battery
Water resistant
Includes lanyard
The WM-4 measures windspeed in knots, mph, kmh, ft/m, m/s. Temperature is measured in °F or °C. Compass is degrees off North. Pressure is measured in hPa or inHg and altitude is in feet or meters.

Specifications:

Range Accuracy
Wind: up to 94 mph +/- 3%
Temp: -40° to 176°F +/- 0.5°F
Comp: 0° to 359° off N +/- 5°
Baro. to 31.00 inHg +/- .01 inHg
Alt. to 26,247 ft +/- 10 ft.
Batteries: Type: 1 x CR Long-life Lithium
Incl.: Yes
Weight: 2 oz