Flexzion Digital Anemometer, Handheld Wind Speed Meter Gauge with Thermometer & LCD Back-lit Display for Measuring Wind Velocity, Temperature. Ideal for Windsurfing, Sailing, Fishing, Outdoor Sports High sensitivity and accurate measuring, provides fast measurement for analysis of critical environment conditions Clear display and convenient control buttons for easily operation; Ideal Tool for Windsurfing Sailing Fishing Kite Flying and Mountaineering 5 convertible wind velocity units, offering feet per minute(ft/min), meters per second(m/sec), miles per hour(MPH), kilometers per hour(km/hr) & nautical miles per hour (knots); Back-lit LCD display allows users to utilize the anemometer even in the dark Powered by a single 9v battery, easily replaceable; Compact and rubberized sides cover provides better grip Temperature range from 32F-122F, with resolution down to 0.1F. Temperature unit can be switched between Celsius and Fahrenheit