The Case Relay DC Extension Cable allows photographers and filmmakers to extend the distance between the camera and Relay by 6.7 feet (2m). This allows for the Case Relay & battery to be away from camera and tripod allowing the photographer to swap batteries with no chance of tripod shake.\n\nThe Case Relay DC Extension Cable allows time-lapse photographers to more efficiently mount their USB battery pack away from their tripod or rail system. This will allow photographers to swap out batteries without camera shake.\n\nFor videographers, moving the Case Relay and battery further from the camera will give added options for storing, mounting and maneuvering.