Open Box Hollis Mod-1 Scuba Breathing Pod Tusa and a phosphorescent dial face

and a phosphorescent dial face

It features a 12-tissue-compartment model

The compass is calibrated for reliable performance in Northern Hemisphere waters

and exploratory underwater sessions

Inflation is a breeze - simply pull out the bottom nipple

Open Box Hollis Mod-1 Scuba Breathing Pod Tusa and a phosphorescent dial faceKnown simply as the MOD 1, the patented Kirby Morgan two chamber (Mask and POD) design opens up a myriad of configuration possibilities with both Open Circuit systems and Closed Circuit Rebreather systems. > Used by United States Marines Combat Divers and Military Dive Teams around the world, Professional Underwater Videography Teams and Scientific Dive Teams, the Kirby > Morgan Modular Full Face Mask represents a giant step up in safety, versatility