Halcyon Symbios HUD Computer IST SPGs Both second stages have breathing

Both second stages have breathing adjusment for ultimate control

recessed push-button

The Halcyon Halo second stage offers steadfast reliability and impeccable performance for demanding divers

Advanced ergonomic construction eliminates four way seams in the crotch and under arm areas giving you unrivalled mobility in this price range

You will appreciate the universal fit

Halcyon Symbios HUD Computer IST SPGs Both second stages have breathingHalcyon Symbios HUD: A Complete Dive Computer in Your Line of Sight The Halcyon Symbios HUD is a full function 5 gas dive computer that can be used independently as a standalone mask mounted computer, or integrated with other components in the connected Halcyon Symbios ecosystem. Mounted to the mask frame, the HUD keeps information stable and consistently visible without having to check a wrist mounted computer. This can reduce task loading during