1. Has high sensitivity and starting threshold of wind speed, can effectively indicates the wind direction and help your sailing.<br> 2. Luminous reflector on the bottom of the vane makes it easy to see both day and night.<br> 3. Manufactured from premium marine grade stainless steel, lightweight yet durable, UV‑proof, will not become porous or brittle.<br> 4. Equipped with bird‑proof spike which extends above vane to keep birds off mast, convenient to use.<br> 5. Simple non‑destructive installation, no other tools are needed, ideal for sailing and yachting wind direction indication.<br> Colour:As Shown<br> Material:Stainless steel<br> Specification:<br> Item Type: Wind Vane<br> Application: Suitable for Marine Yacht Boat Sailing Wind Direction Indication.<br> Note:<br> Installation guide not included, we strongly recommend you seek professional installation.<br> Please check as much as possible to make sure the item is what you need.<br> Due to different batches, there may be differences in product appearance and printed text, which will not affect use<br> Package Contents:<br> 1 * Boat Wind Direction Indicator<br> Only the above package content, other products are not included.<br> 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.