Features: This handy palm-sized anemometer is perfect for weather enthusiasts, kite enthusiasts, kite surfers, windsurfers, paragliding enthusiasts and sailors Measure wind speed and temperature Large easy-to-read LCD display with backlight Beaufort wind scale wind speed bar graph Wind chill indication Data hold function High-precision pressure sensor Fast response, external thermistor Auto/manual shut-off Temperature display in degrees fahrenheit Celsius Current/max/average wind speed reading Powered by 3V CR2032 battery (not included) Specifications: Material: Plastic + Metal Color: Black + Yellow Air Speed Range: 0 - 30m/s, 0 - 90km/h, 0 - 58 60ft/min, 0 - 65mph, 0 - 55 knots. Resolution: 0.1 m/s, 0.3 km/h, 19 ft/min, 0.2mph, 0.2 knots. Threshold: 0.1 m/s, 0.3 km/h, 39 ft/min, 0.2mph, 0.1 knots. Accuracy: +/- 5%. Air Temperature Range: -10°c – +45°c, 14°f – 113°f Resolution: 0.2°f, 0.36°f. Accuracy: ± 2°c, ± 3.6°f Thermometer: NTC thermometer Operating temperature: -10°c – +45°c (14°f – 113°f). Operating Humidity: Less than or equal to 90% RH Storage Temperature: -40°c – +60°c, -40°F – 140°F. Current consumption: about 3mA. Wind speed range: 0-30m/s. Wind Speed Unit: m/s, Km/h, ft/min, knots, mph. Size: 10.7cm x 4.5cm x 2.1cm - 4.21 inch x 1.77 inch x 0.83 inch Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. Pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Included: 1 x Digital Anemometer (Without Battery)