[for DJI Action 4, Action 3]: SmallRig Camera Cage 4119 is specially designed for Osmo Action 4, Action 3. It provides all-around protection as well as varied mounting points to meet your demands for more professional videoing. | [Compatible for DJI Mic & Original Adapter]: The left side of the cage allows attaching for DJI Mic. The bottom and right side of the magnetic mounts supports the original magnetic quick-release adapter for DJI or SmallRig Magnetic Adapter Mount 3662 for a quick switch between horizontal and vertical modes. | [Quick Lock & Full Access]: With a form-fitting design, it easily secures/releases the camera via a press lock and gives full access to buttons and applying screen proctor. You can replace the battery from the right side without removing the cage. | [Rich Extension]: A cold shoe mount at the top and anti-twist 1/4"-20 thread holes on three sides are available for attaching accessories， such as SmallRig Super Clamp 3757, SmallRig Dual Cup Camera Mount 3566, SmallRig Magnetic Adapter Mount 3662 for time-lapse photography, skateboarding, car shooting, and other scenes. | [Material]: Made of aluminum alloy and silica gel, it is lightweight and solid.