Review on Wintact Handheld Anemometer Small Digital Vane Wind Speed Meter Gauge, Pocket Air Flow Velocity Tester With Measuring Wind Temperature 14℉ To 113℉ For House HVAC Duct Outdoor Kite Boat Sailing Surfing by Robert Norris

The wind speed indicator was what I most liked. But the battery apparently kept disconnecting, which caused all settings to reset to factory settings. And it's a pain to reset them for U.S. units. Also, the temperature readings were not even close to actual temperature. In most cases it read 20 degrees or more too high. And would not change when you walked outside or put it in the 'fridge. I don't think this is ready for prime time. I returned mine for a refund.