Measure wind speed and temperature. easy-to-read LCD display with backlight. Wind speed in Beaufort wind scale bar graph. Wind chill indication. Data hold function. Color: yellow Material: ABS High precision pressure sensor. Quick response, external thermistor. Auto/manual power off. Temperature display in /F. Wind speed range: 0-30m/s Wind temperature range: -10 - 45 (14-113F) Current/max/average wind speed reading. Wind speed unit: m/s, Km/h, ft/min, Knots, . Powered by a 3V CR2032 battery. Package Contents: 1 x Anemometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.