Aqua Lung Helix Compact Pro Octo Scuba Lift Bags The first is external and

The first is external and closed with a buckle

Any number of Snorkie Talkie can comunicate with each other on the same channel

Uses 3*AAA battery

1st Stage Material Black Tech-Coated Brass

Aqua Lung Helix Compact Pro Octo Scuba Lift Bags The first is external andThe Helix Compact Pro Octopus provides the same great performance as the Helix COmpact Pro primary second stage. This small compact and friendly octopus is the one you want to take on your next dive trip. HELIX COMPACT PRO Second Stage Type of second stage Pneumatically balanced Controls Venturi switch Breathing resistance Preset Heat Exchanger for freezing resistance Yes 2nd Stage Weight 200 g Hose length 1000 mm Overall work of breathing (WOB)