GoPro GHHN30 Helmet HERO Expansion Kit for Digital Hero 3 Camcorder Several quick-release mini base plates are included. Attach them to your favorite helmets and gear and record the action from multiple camera angles. Quick-releae polycarb waterhousing is bomb-proof and waterproof to 100'. Also compatible with Ride HERO and Motorsports HERO expansion kits. Head HERO head strap mount, included also. Perfect for climbing, swimming, or search and rescue. No helmet? No problem.