The Tek X  octopus is a high performance octopus designed for the technical diver and those who demand the very best. Features a pneumatically balanced second stage making it a superior performer at depth.   The pneumatically balanced second stage features a venturi assist switch to minimize your breathing effort while in the dive position and a pre-dive position to prevent free flow, when the regulator is not in use. The second stage features an over sized exhaust valve to reduce exhalation effort. The performance of this octo will satisfy even the most demanding divers.