Automatic pressure equalisation valve. Contour is generally cosidered to be superior to its well-known competitor. They are incredibly strong and they’re waterproof. Spare standard lens ring. Spare new battery.
Contour ROAM2 Action Camera – Full HD Waterproof Action Camcorder + 4GB MicroSD
BiBiFly Car Suction Cup for Dash Cam Holder with 16 Different Types Swivel Ball Adapter Use for Driving DVR Camera Camcorder GPS Action Camera, Vehicle Video Recorder on Windshield & DashBoard
Sport+ GPS Action Camera 1080P HD 5MP Waterproof Bike Cam
Beeline Modular Mount Extender Kit for Moto II | Adjustable Extender Arm for Motorcycle GPS Tracker or Action Camera Mounts | Motorbike Accessories for Adventure Riders & Commuters
Garmin VIRB XE Action Camera High-Definition Digital HD Video, GPS
KanDao QooCam 3 Ultra 8K HDR Video Panoramic 360° Action Camera 96MP Photos GPS
