CITIZEN WATCHES PROMASTER. A stylish new update to the Promaster Dive Collection, featuring a stainless steel case and black polyurethane strap with a white dial, a black unidirectional bezel and luminous hands and markers, this must-have dive watch also includes a 1/5 second chronograph measuring up to 60 minutes, 12/24-hour time and date function. Sustainably powered by any light with Eco-Drive technology that never needs a battery, you’ll wear this sporty men’s timepiece in style from office meetings to ocean adventures. Water resistant to 200 metres. Calibre B612. Caliber B612. Case Diameter 45mm. Safety Fold Over Clasp with Push Button.