Features:
High sensitivity and accurate measurement, provides analysis of environment conditions.
Temperature measurement function, can choose unit between Celsius/Fahrenheit(Long press the "UNITS"). 
Low battery indication; auto power off and date hold function.
Measure air velocity in 5 units: m/s, km/h, ft/min, knots, mph.
Record and recall maximum/minimum function. 
Easy to use, just one-handed operation. 
With a screw hole, can be mounted on the bracket.
Clear data display and convenient control buttons for easily operating.
Ideal Tool for windsurfing, sailing, fishing, kite flying and mountaineering.

Specifications:
Display: LCD 
Measurement Units: m/s, km/h, ft/min, knots, mph
Temperature Unit: °C / °F
Speed Range: 196-4900ft/min; 1.00-25.00m/s; 3.6-90.0km/h; 2.24-56.0mph; 1.94-48.5knots
Accuracy: +/-(3%+40ft/min); +/-(3%+0.20m/s); +/-(3%+0.8km/h); +/-(3%+0.4mph); +/-(3%+0.4knots)
Resolution: 1ft/min; 0.01m/s; 0.1mph; 0.1knots
Operating Temperature: 32°F to 122°F (0°C to 50°C)
Operating Humidity: Max. 80% RH
Power Supply: 1 * 9V Battery(Not Included)
Power Consumption: Approx. DC 8.3mA
Dimension: Approx. 20 * 5 * 3.5cm / 7.87 * 1.97 * 1.38in
Weight: 120g / 4.24oz
Package Size: 24 * 11.5 * 3.5cm / 9.45 * 4.53 * 1.38in
Package Weight: 158g / 5.59oz

Package List:
1 * Digital Anemometer