The Mares Sirius dive computer is a compact watch-style computer with a bright screen for easy underwater readability. The watch combines elegance with modern technology for the demanding recreational and technical diver! Choose a basic screen in recreational mode, with optional air integration with a Mares transmitter or add up to 5 nitrox or trimix mixes to manage your technical dives! Use it with a thin summer suit or a thick drysuit with interchangeable straps, and easily work your way through the intuitive menus! Features: Bright MIP colour, high-resolution screen Nitrox (and trimix) capable, up to 5 gases Up to 30 hours dive time per full charge (without transmitter) 100 Dive logbook with multiple graphs Optional air integration with a Mares transmitter Three watch faces and different colour options Interchangeable strap Bluetooth connection for direct connection to your smartphone Digital compass (full tilt) Stopwatch & Bottom Timer Mode Wireless charging base Technical Features: ZH-L16C algorithm with gradient factors Predictive Multigas Tissue saturation and dive profile graph Bottom timer mode with resettable average depths Certain settings can be changed during the dive Future Deco and runaway deco alarm