VideoCarbon’s Digital Shift Recorder (DSR) is the first in a new product line of portable body-worn digital video recorders. Worn on the officer’s dutybelt, one small wire connects a hidden mic and flat inconspicuous button cam, both easily concealed and easy to use. With a single quick-disconnect, the DSR can provide power, control, and video to the body-worn cameras. The DSR has an integrated hard disk drive and a field-replaceable Lithium-Polymer battery. It offers a 30-second pre-event recording feature and embedded time/date/serial number information in the video to support chain-of-evidence requirements.