Feature: 1. Equipped with high-definition LCD display, with backlight function, it can display the wind speed measurement results directly. 2. Built in six-leaf blades, low friction bearing technology, more sensitive measurement, more accurate data. 3. With lanyard, it can prevent loss or falling. It is small in size, compact in structure and suitable for carrying. 4. Mini portable anemometer, shell made of high quality ABS material, durable and wear-resistant, long service life. 5. With soft rubber protective cover and anti-skid texture on the side, it can better protect the instrument. 6. It can be used to measure the wind speed of electric fan, air conditioner and street. Specification: Condition: 100% Brand New Item Type: Wind Speed Meter Material: ABS Weight: Approx. 102g / 3.6oz Power Supply: 1 x CR2023 Battery (Battery Not Included) Product Model GM816 Wind Speed Range 0.3 - 30m/s Wind Speed Error ±5% Resolution 0.1m / S Temperature Range -10 - 45 °C Temperature Error ± 2 °C Wind Rating Support Maximum Support Average Value Support Wind Speed Unit M/S, Km/H, Ft/Min, Knots, Mph Temperature Sensor NTC Negative Temperature Coefficient Resistance ° C / ° F Conversion Support High Definition Backlight Support Automatic Shut-Down 14 Minutes Automatic Shutdown without Operation Product Power CR2032 3.0V (Battery Not Included) . Package List: 1 x Wind Speed Meter (Battery Not Included)1 x Instruction Manual1 x Hanging Rope Note: Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.