Ocean Reef GSM G.Divers 2nd stage The Alpha 8 second stage

The Alpha 8 second stage is a dependable downstream demand valve design

Every Feature Designed w/High Performance

Oceanic is able to make a smaller air cell

Pressure Gauge:Zeagle Slim-Line 0 to 5000 psi SPG

all bags are equipped with durable #10-YKK zippers and a zippered accessory pocket

Ocean Reef GSM G.Divers 2nd stage The Alpha 8 second stageOverview Wireless underwater transceiver unit, with the autonomy of approx. 30 hours in receiving mode, and range of operation of 200 250 meters (calm sea water), lightweight, powerful single channel and push to talk communication system make the GSM Gdivers the perfect addition to any training class or guided tour, for extra safety and for fun! The unit operates on the same frequency as all other OCEAN REEF units and most popular wireless