Add a microphone to your DJI Osmo Action 4 camera with the JJC AD-OA4 3.5mm Audio Adapter. The adapter features a USB-C connector that plugs into your camera's corresponding port. Use the 3.5mm audio jack on the other end to connect your preferred 3.5mm TRS microphone for better vocal recording. An additional USB-C charging port supports simultaneous charging when a microphone is connected. Furthermore, you can use this adapter with or without the official DJI Action Frame.