Experience the thrill of the new gopro 3d hero system its a waterproof 3d expansion kit enabling users to combine two 1080p hd hero cameras into a single housing to record 3d video and photos while simultaneously recording in 2d a synchronisation cable plugs into the rear hero port on both cameras to connect them together allowing both cameras to record video and photos as one single unit for example a single shutter button controls both cameras the 3d hero system is waterproof up to 180 f