3D Waterproof Housing; 3D Waterproof Door + Skeleton Door; 3D Hero Sync Cable; 3D Anaglyph Glasses (3 pairs); Helmet Front Mount; 2 Flat + 2 Curved Adhesive Mounts; Assorted Mounting Hardware; The 3D HERO System allows you to combine two HD HERO cameras, or two HD HERO2* cameras into a single housing to record 3D video and photos while simultaneously recording in 2D. A synchronization cable plugs into the rear HERO Port on both cameras to join them together, enabling both cameras to record video and photos in perfect synchronization. This is a requirement for professional quality 3D and is available only from GoPro. :: Unisex > iPod Accessories Size: one size.