Features: 1.100% brand new and high quality. 2. The hand-sized anemometer isconvenient to carry. 3. Multi-function measurement can be measured: wind speed, temperature, humidity, atmospheric pressure, illumination, altitude, dew point, cold air promptand air-cooled indication. 4. LCD backlight designfor easy reading. 5. Anemometer LCD digital display is an ideal professional measurement of wind speed and wind temperature tools, and can also be used for industrial and domestic purposes, such as measuring wind speed. Specification: Condition: 100% Brand New Model: GM8910 Measuring item Measuring range Resolution Accuracy Response time Temperature -20.0 to 60.0 0.1 C 1 1s Humidity 0 to 100.0%RH 0.1%RH 5%RH 1s Wind chill -40.0 to 10.0 0.1 2.0 1s Dew point -40 .0to 60.0 0.1 2.0 1s Wind speed 0.7 to 30.0 m/s 0.1 m/s 3%+/-0.3m/s 1s Barometric Pressure 300 to 1100 hPa 0.1 hPa 1.0hPa 1s Alititude -500 to 9000m 1m 1s Illumination 0 to 55000 lx 1 lx 3% 1s Power: 2 x CR2023(not included) Weight: Approx. 190g / 6.7oz Size: Approx. 48 x 22 x 122mm / 1.9 x 0.9 x 4.8in Package List: 1 x Digital Anemometer 1 x Hanging Rope