1、With clamp to mount the camera or phone on the grip firmly, protect them from sinking in water. 2.Compatib 2、Compatible for GoPro Hero 6 Hero 5, Hero 4, Hero 3, Hero 3 +, Xiaomi yi action camera. 3、Available for most buoyancy stick, it also support retractable 6 inch dome port. 4、It needs to be work with the waterproof case, or the trigger doesn't work. 5、Can help to keep your shooting stable, and can use while diving. Features: 1.With clamp to mount the camera or phone on the grip firmly, protect them from sinking in water. 2.Compatible for GoPro Hero 6 Hero 5, Hero 4, Hero 3, Hero 3 +, Xiaomi yi action camera. 3.Available for most buoyancy stick, it also support retractable 6 inch dome port. 4.It needs to be work with the waterproof case, or the trigger doesn't work. 5.Can help to keep your shooting stable, and can use while diving. 6.One-handed operation. Specifications: Material: plastic Color: yellow Packing List: 1 x Trigger Shutter 1 x Holder Adapter 1 x Phone Holder Clamp 1 x 1/4 inch Long Screw