Ocean Pro Orthodontic Mouthpiece Colour:Black the SPG Tech Gauge with

the SPG Tech Gauge with black face provides exceptional accuracy and reliability in demanding underwater conditions

The air balanced flow-through piston design is unaffected by your breathing rate

so make sure to talk to your PADI dive centre about possible dive locations where you can finish your Wreck Diver Specialty Course

These simply screw into the side of the valves after you have drained them and removed the bands and isolation bar

Ocean Pro Orthodontic Mouthpiece Colour:Black the SPG Tech Gauge withDesigned for extra comfort with the natural overbite of the mouth, the Ocean Pro Orthodontic mouthpiece is made from tough yet soft silicone. It has been designed to help relax the jaw and reduce jaw fatigue during a dive.