Precautions: 1. This headband is suitable for a of action cameras. Maximum load of external camera is 250g.2. The can whether to use the optional co-directional extension according to the shape and size of the camera connector.3. When using a camera with a 1/4inch screw on the bottom (such as ONEX2), you need to use the supplied 1/4inch screw adapter.4. install the headband according to the instructions for use, do not install other accessories by yourself.5. After use, air dry the headband and it in a dry, cool and ventilated place.Instructions for use1. Adjust the headband to the appropriate size. Rotate the front bracket to adjust the square of the front bracket towards.2. Attach the camera to the headband front bracket with the 1/4inch screw rod. Set the headband is worn on the head.Note: The camera can also be mounted on the headband with a rear bracket.Model Number:Headband Head StrapType:Straps & MountsType:For Gopro10/9 / X2/ R/ GO 2Suitable for head circumference: 46-70cmcolor:BlackMaterial:PCPackage Contents:1 x headband1 x Co-directional extension connector1 x 1/4inch screw adapter2 x 1/4inch screw fixing rodOnly 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.