Features Well-made of sturdy ABS materials, safe and practical for long-lasting using time. Small rotational resistance, accurate measurement, small size, light weight, easy to carry and assemble. Flexible fitting is more in the wind, convenient and practical Anemometer Shell. Safe to use. Boasting wonderful performance and strong stability. NOTE: This is just a Shell, it does not contain the Wind Sensor. Material: ABS colour: black Package Contents: 1 x Shell for 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.