All the high performance of the HOG D1 in a smaller package! For this special Edition we removed the swivel and instead went with a compact main body. The high gas flow rate and breathing performance of this first stage provides plenty of gas for all technical and extended range dives and comes ready for use with elevated oxygen applications (100 percent Oxygen to 2400psi, 80 percent Oxygen to 3400 psi out of box when new). When the HOG D2 first stage is matched with the HOG technical second stage, and your choice of hose lengths, this provides the perfect regulator for demanding dives. All the high performance of the HOG D1 in a smaller package! For this special Edition we removed the swivel and instead went with a compact main body. 2 High Pressure Ports 4 low Pressure Ports 300 Bar DIN