Compatible with fill lights, microphones, and other accessories featuring a cold shoe mount. Compatibility: Osmo Action 5 Pro, Osmo Action 4, Osmo Action 3 Tips: When using the Osmo Action Battery Cover Cold Shoe Adapter, make sure that it is securely fastened without any gaps, and keep it clean. Tips: The Osmo Action Quick-Release Cold Shoe Adapter contains magnets. Handle it with care. Tips: Do not mount accessories weighing more than 200 g on the cold shoe or subject it to vigorous shaking.