1. MAX/MIN value, average wind speed, real-time value selection 2. Selection of different wind speed and air volume units 3. Selection of different temperature units 4. Low power display, backlight display 1. Wind speed units:meters/second, feet/minute, knots, kilometers/hour, miles/hour 2. Wind speed range:0.3-30M/S 3. Accuracy:±5% [Air volume] 1. Air volume unit:CMM (M3 /MIN) Range:0-999900 2. Air volume unit: ((M3 /S)) Range:0-999900 3. Air volume unit:CFM (FT3 /MIN) Range:0-999900 [temperature] 1. Temperature range -10-45℃ 2. Temperature unit:℃/℉ switchable 3. Accuracy:±2℃ Product weight:About 147g Battery:Lithium battery charging, TYPE-C interface (please manually connect the wiring before use) Colour:Black & Orange Material:abs Size:About 180x80x50mm Package Contents: 1 * Wind speed measuring instrument 1 * Data cable 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.