This Anemometer with Wind-chill Indication is perfect for measuring wind chill & wind-speed & wind scale and temperature, air velocity on LCD screen.   Features: Digital anemometer for measuring air velocity(wind speed), temperature and wind chill .  Temperature units ℃/℉ selection, 5 wind speed units selection: m/s, km/h, ft/min, knots, mph.  LCD display with backlight for easy operation in darkness. Perfect for home and outdoor using.  MAX / MIN / Data Hold functions, high accuracy & fast response.(for all measurement modes).  Low battery indication, over range indication, auto power off & energy saving.   Specifications: Material: ABS Plastic;  Switchable Wind Speed Unit: m/s, knots, km/h, mph, ft/min;  Air Velocity Range: 0.8～30.0m/s, 1.4～108.0km/h, 0.8～58.3knots, 0.9～67.2mph, 78～5900ft/min;  Air Velocity Resolution: 0.1m/s, 0.1km/h, 0.1knots, 0.1mph, 10ft/min;  Air Velocity Accuracy: ±(5%+0.5m/s), ±(5%+5.0km/h), ±(5%+0.5knots), ±(5%+0.5mph), ±(5%+50ft/min);  Temperature Range: -10~60℃ / 14~140℉;  Temperature Resolution: 0.1℃ / 0.2℉;  Temperature Accuracy: ±(2.0%+ 2)℃ / ±(4.0%+ 4)℉;  Auto Power Off: 10min;  Low Battery Indication: battery voltage low than 6.2V;  Power Consumption: Approx. 8.3mA DC;  Operating Conditions: 0～40℃ / 32～104℉, 45%-80%RH;  Storage Conditions: -20～60℃ / -4～140℉, 45%-80%RH;  Power Supply: 1 * 9V 6F22 battery(NOT included);  Item Size: 192 * 53.8 * 35mm / 7.56 * 2.12 * 1.38in(L*W*H);  Item Weight: 119g / 4.2oz;  Package Weight: 212g / 7.49oz;  Package Size: 22.5 * 8 * 4.8cm / 8.86 * 3.15 * 1.77in;   Package List: 1 * Digital Anemometer;  1 * Storage Pouch;  1 * User Manual Manual