Prism 2 Tec Scuba diving mask While it caters more to

While it caters more to hardcore cave divers

ELASTEK/Glideskin-in trimmable face and neck glides nicely over hair

Quick-Release Snorkel Keeper with 30° Rotation

switchable during a dive

Prism 2 Tec Scuba diving mask While it caters more toThis products Overview The PRISM 2 is an electronically or manually controlled, constant PO2, modular, closed circuit diving system. As open circuit (SCUBA) divers we rely upon filling our lungs with air from a pressurized gas tank with every inhalation and then exhausting that volume of air into the surrounding water with every exhalation. As we descend deeper the water pressure around us increases and the volume required to fill our lungs increases;