Features: Air Velocity Specification: Range: 0 - 30 m/s 0 - 90 km/h 0 - 5860 ft/min 0 - 65 mph 0 - 55 Knots. Resolution: 0.1 m/s 0.3 km/h 19 ft/min 0.2 mph 0.2 Knots. Threshold: 0.1m/s 0.3 km/h 39 ft/min 0.2 mph 0.1 Knots. Accuracy: +/- 5%. Air Temperature Specification: Thermometer: NTC Thermometer. Range: Between -10C and 45C (between 14F and 113F) Storage Temperature: Between -40C and +60C between -40F and 140F. Resolution: 0.2C 0.36F. Accuracy: 2C 3.6F Current Consumption: About 3mA Operating Humidity: Less than or equal to 90% RH. Product Weight: about 63g Package include: 1x Infrared Digital Anemometer 1x operating instructions 1x 3V CR2032 battery