A. About this item B. ACCURATE - Allows you to measure: - Average and maximum current wind speed - Temperature from -10C to 45C (14 - 113F) - Choose the right unit of measurement: m/s, Ft/min, Knots, Km/h, Mph - 0.1 m/s accuracy and 0.2C. C. PORTABLE - Whether you are a mountain lover, sailor, hiker, astronomer or just curious about nature, this is an anemometer you can take with you wherever you go. D. Versatile - Can also measure the speed and temperature of your air - conditioning system or fan. E. EASY TO USE - Has a large LCD display and measures wind speed and temperature. F. FEATURES - Material: ABS - Power supply: 1 CR2032 3V button cell (included) - Certificates of conformity: CE, FCC, ROHS - Product dimensions: 5.8 x 10.5 x 2 cm