SOONWELL's Coiled D-Tap Power Cable for BMPCC 4K/6K extends from 18 to 40" and provides a neat and efficient solution for powering the camera from a battery with a D-Tap output or other D-Tap power sources. The dedicated 2-pin camera connector securely locks when you plug it into the camera, and the coiled aspect of the cable ensures that if the cable is pulled too hard accidentally, it won't pull the camera along in most scenarios.