Built to deliver a steady supply of air in harsh diving conditions, when the going gets rough, the MK17 EVO/A700 gets going. The MK17 EVO is completely sealed off from the elements, ensuring trouble-free operation no matter how cold or murky the water gets. It is more compact than its predecessor, yet delivers better breathing performance. Its improved internal design allows more airflow from the LP ports which have been reconfigured for better hose routing. The A700 offers extraordinary breathing performance in a precision-handcrafted, full-metal package. Built for demanding divers and demanding conditions, with this reg system you can always be confident of your next breath. Ideal for cave and wreck diving too.