Proster Anemometer Digital LCD Wind Speed Meter Gauge Air Flow Velocity Measurement Thermometer with Backlight for Windsurfing Kite Flying Sailing Surfing Fishing Proster Handheld LCD Digital Anemometer with Backlight: Use to Measure Wind Speed and Temperature Wind Chill Indication; Data Hold Function; Auto/ Manual Power Off; High Precision Pressure Sensor Wind Speed Range: 0-30m/s; Wind Speed Unit: m/s, Km/h, ft/min, Knots, mph Wind Temperature Range: -10 - 45 Centigrade (14-113F); Storage Temperature: -40~60 Centigrade Air Velocity: Range: 0 - 30m/s, 0 - 90km/h, 0 - 5860ft/min, 0 - 65mph, 0 - 55Knots