The Accessory Pro&reg; 24 inch Stainless Steel Tether Lanyard compatible with all GoPro&reg; cameras The Accessory Pro brand product, made to be used with GoPro cameras. Saltwater is ok and will not harm this cable. Attaches around the thumb screw, doesn't slip off. Attach to anything you can think of for added security, bikes, helmets, snowboards, boats, jetskis, etc. Tether compatible with all cameras. ONLY TETHER IS INCLUDED!