Features: brand new and high quality There are 2 types, UT363 & UT363BT, UT363BT with blue-teeth function and backlit, UT363 without. Magnetic induction type wind speed sensor and N-TC negative temperature coefficient sensor. 12 Winds Article dynamically indicating eliminates the trouble of complicated conversion. Dual display of wind speed and temperature. Light weight, small size makes this Wind Guage Meter easy for you and your family to take outside for outdoor actitivities. It is widely used in mining, electric, iron and steel, petrochemical, energy saving,navigation, fan manufacturing, exhaust ventilation, sporting and many more industries. Specifications: Material: Plastic Size: 16x5.2cm/ 6.3x2.05 in Display: LCD Display Wind Speed Range: 030m/s, 1.4108km/h, 0.758knots, 0.867mph, 785905ft/min Wind Speed Unit: for m/s, Knots, for km/h, mph, ft/min Wind Scale: 012 Accuracy: 5%rdg + 0.5 Temperature Range: -1050C / 14122F Resolution: 0.1C / 0F Accuracy: 2C / 4F Auto Power Off: 5min Sampling Rate: 0.5s Overload Indication: O-L Altitude: Max.2000m Operating Temperature: 23C5C(80%RH) Storage Temperature: -2060C(