Delivers a stunning first-person perspective with a camera mounting position that mimics the user’s line of sight, even on rugged terrain. It is easy to assemble and disassemble, and works on a variety of different helmets. What's In The Box:Osmo Action Helmet Chin Mount × 1,Osmo Locking Screw × 1 Compatibility: Osmo Action 5 Pro, Osmo Action 4, Osmo Action 3, DJI Action 2, Osmo 360 (Osmo Action Quick-Release Adapter Mount is required and sold separately), Osmo Nano (requires Osmo Dual-Direction Quick-Release Adapter Mount, which is sold separately)