D420 2ND STAGE Scuba Weights your dive data has never

your dive data has never been easier to read

low-effort delivery of air

the purge valve positioned at the lowest point makes quick work of any water that does sneak in

minimizing heat loss from water transfer

This dependable single-gas wrist-mount dive computer offers a host of new features

D420 2ND STAGE Scuba Weights your dive data has neverWith the introduction of the D420, SCUBAPRO engineers have combined the iconic design of the original D Series second stages with the latest advances in breathing performance technology. The D420 features a brand new balanced valve inside a housing supported by a full metal structure. Called the Progressive Flow Control Valve, it is able to deliver abundant airflow for the best breathing performance with a natural smoothness comparable to what you