The Skywatch® Wind is a top-of-the-line anemometer (wind speed meter) that measures wind speed, air temperature, and wind chill quickly and precisely. It's small enough to take it with you on the go and is dust and shockproof for added durability. Dust proof and shock resistant allows for use in harsh environments. The Swiss-made device has a replaceable propeller for convenient maintenance. Features: Windspeed (km/h, knots, mph, m/s instant + maximum) up to 185km/h, 100kts, 115mph, 50m/s Temperature in Celsius and Fahrenheit degrees -30°C to +70°C / -22°F to + 160°F Windchill factor in Celsius and Fahrenheit degrees Waterproof IP67 - floats on water Dimensions : 41 x 109 x 17 mm Weight: 30 g High-contrast LCD display Waterproof (IP67) & floats Lanyard Factory-installed lithium battery (designed for at least 250,000 measurements) Automatic switch-off