The Bebob Engineering COCO AF is especially designed for the Panasonic AG-AF100 Camcorder. The COCO AF is a compact method of powering accessories such as a light, on-board LCD monitor, external recorder, or audio receiver. Designed to draw voltage from high capacity Gold Mount batteries. The COCO AF securely attaches to the camera body. The Gold Mount battery then simply snaps onto COCO's special mounting plate.