Deity C21 3.5mm TRS to USB-C Coiled Cable

The C21 connects a TC-1 to cameras whose only input is USB-C, which is how DJI builds the Action 3 and newer and the Osmo Pocket. Without it those bodies sit outside the timecode workflow and get synced by hand in the edit.

The cable is coiled, so it takes up the slack itself on a gimbal or a small rig where a straight lead would hang into frame. Timecode transmission is the design purpose rather than a side effect of an audio cable that happens to fit.