Aqua Lung Pro HD BCD i300 Dive Computer Titan / ABS Regulator Set Reg Bag Scuba Diving Gear Package Titan Scuba Regulator Uses a balanced-diaphragm mechanism resulting in ease-of-breathing and consistent performance while environmentally protecting the internal parts Pro HD BCD wrap-around jacket with weight integration ResisteK&Atilde;&fnof;&Acirc;&deg; material, will hold up to the rigors of salt and chlorine and retain its good looks Aqualung i300 Computer Air and Nitrox modes for a range of dive situations with Effortless operation ABS Octopus The ABS Octopus combines good breathing performance with the benefits of a low profile body style Reg Bag w/ protective walls. Knife is sold separately