The Dji Osmo Action Chest Strap Mount creates an intensely immersive first-person view. It is comfortable to wear and comes with an adjustable camera tilt angle. This set contains Dji Osmo Action Chest Strap Mount for Osmo Action 5 Pro, 4, and 3, Dji Action 2, and Osmo Action, and Osmo Locking Screw.