The Abisso divers watch doesn't accept compromises: calibrated for extreme diving, with a satin steel case, screw-down crown and valve for helium leakage, the Abisso Divers watch guarantees water resistance up to 1000 meters. The Abisso is finished by a rotating and unidirectional ring with an easy grip finishing, baton indexes and large luminescent " gladio " hands. Strumento Marino Abisso is a true professional Divers watch!
To guarantee the safety of the ABISSO watch for deep sea diving there is a helium release for prolonged immersion or when the decompression stops during the surface climb, creates a pressure difference between the gases inside the watch case and its environment. This decompression, without the helium valve, can cause damage to the watch as infiltration of water ( especially from the crown ) or even the braking of the glass. The Helium valve is a guarantee of quality and that the Abisso is up to any task a professional diver may need to do.