For years our customers have been asking for wind direction along with wind speed. New for 2007, the Kestrel 4500 does just that with its built in digital compass. But it doesnt stop there. It also calculates crosswind and headwind/tailwind with reference to a user-set target heading, and stores the information along with all the other environmental readings in its 1400 data point memory.
Kestrel 4500 Measures

Heading (true & magnetic)
Wind direction
Crosswind
Headwind/tailwind
Altitude
Pressure trend
Barometric pressure
Wet bulb temperature
Relative humidity in %
Heat stress index
Dewpoint
Wet bulb temperature
Density altitude
Wind chill
Air, water, and snow temperature °F or °C
Current, average, and maximum air velocity
Kestrel 4500 Features

Waterproof and floats
Time and date
Easy- to-read backlit display
Data Logger (automatic and manual)
Customizable data storage - 1400 data points
Minimum, Maximum and Average values
Multi-Function 3-line display
Humidity sensor can be recalibrated in the field with our Relative Humidity Calibration Kit.
Exterior temperature, humidity, and pressure sensors for fast and accurate readings
Customize screens to display user-selected measurements
Graph and recall trends
User-replaceable impeller
Flip-top impeller cover allows use of other functions while protecting the impeller
Data charting
Upload to a computer (with optional interface)
Five languages (English, French, Spanish, German, and Italian)
US Patent Nos. 5,783,753 and 5,939,645 and 6,257,074
5-year warranty
Assembled in the USA
Kestrel 4500 Includes

Soft carry pouch
Neck lanyard
Batteries - 2 AAA
Kestrel Certificate of Conformity