Attention:If you want to make it more tighter you can press the lock button and Tighten the screwsto aviod the camera to fall off!when you want to use it on the ocean please take care ofthe camera to avoid it fall off in the ocean!Fit for:Compatible with Gopro HD Hero4 3+ 3 2 1 Gopro Hero4 SessionPackage includes:1 X 360 Degree Rotating Wrist Strap