The new Galileo HUD is an innovative and thoroughly unique air-integrated dive computer. This new-to-the-dive-world, technologically-advanced computer offers a heads-up display mounted on a diving mask. Delivering excellent readability along with hands-free data monitoring, with the introduction of the Galileo HUD SCUBAPRO engineers have created a user experience unlike anything previously seen in diving. The Galileo HUD is compatible with a variety of SCUBAPRO masks, including the Spectra, Spectra Mini, Zoom EVO (special mask holder), Synergy Twin, Synergy 2 Twin, Currents Pro, Ecco Mask Two, Vibe 2, Futura 1, Pro Ear, Flux Twin. Enjoy the convenience of air integration without the hassle of a dangling hose. This low-profile Smart transmitter works with SCUBAPRO's most advanced dive computers. It screws into a high pressure port on your first stage and relays tank pressure and true remaining bottom time (RBT) to the computer screen.