Body microphones are usually paired 1-1 with their docking station in the vehicle. 12-hour battery life microphones exist today.. Getting a camera that can record for 12 hours, offload video wirelessly, and fit on an officers chest/belt without being as large as a full-sized radio is difficult.

Body microphones are typically paired with an in-car system and operate on the 900 MHz to 2.4 GHz frequencies. All video and audio is recorded on the in-vehicle recorder.