For deep water diving, Briston offers this diver watch with a 44 x 44 mm matt black acetate case. Water-resistant to 300 meters, it is equipped with a sapphire crystal and inserts in natural Superluminova © for underwater time legibility. A matt black ceramic external bezel allows you to calculate your dive times in complete safety. The Clubmaster Diver Pro is the ideal watch for all diving enthusiasts.