SEATEC                   US NAVY- STYLE “horse collar” BCD front mounted, u-shaped inflatable bladders that loop around the back of the neck & rest on the chest. While largely replaced by modern jacket & wing Style BCDs. In recreational diving. They remain in use by military & Search & Recovery divers for their unmatched surface floatation and ability lto keep an unconscious diver face up. All military dive teams have trained and used this BCD. This is a novelty item. The low-pressure inflator and the single 25 Gram                                                                                        Detonator works.                                                                                                                  CO2 cartridge not included