[Adjustable Size Camera & Mobile Phone Chest Strap]: Double shoulder chest strap, elastic webbing, suitable for various body shapes. Buckle design, easy to install, suitable for GOPRO hero7 5 6 3+, hero4, hero3, hero2 and coyote, Sony, Xiaomi, Xiaoyi, DJI, osmo and other action sports cameras. [With Sports Camera Installation Bracket kit]: Our Chest Harness Mount use quick-insertion slot, which can be quickly connected to a variety of buckle bases for shooting at different angles. The bracket is used to connect the DV to the chest strap. Even if it encounters a bumpy road, it will not affect the stability of the fixed camera. With fully upgraded mobile phone holder: Safer, more flexible, more play, unique 2 screw hole design. It can be shot horizontally or vertically, and can be adjusted to any angle. It can be installed on any tripod of major mobile phones (Apple, Samsung, Xiaomi, etc.). Clamping range: 55-105mm! [Perfect Set of Camera Accessories]: with 1/4 Tripod Screw Adapter can used for all kinds of connection. The perfect match between the various accessories, mobile phone and camera can be used, can be applied to skiing, cycling, rowing, etc. Let you keep the wonderful moments. [Stable Structure]There are two non-slip rubber pads at the bottom and top of the phone holder;When you use the mini wrench provided to fasten the long screw to the J-hook mount,The mobile phone clip will be in accordance with your adjusted angle, stable shooting, will not slide.