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Seiko

Proper divers don't really wear diving watches these days. Or rather, the diving watches they do wear tend to be wrist-mounted computers, with digital displays and sensors for everything from oxygen levels to pressure readings. But divers do wear watches from Seiko's Prospex line, which is why it's the only marque allowed to bear the logo of the Professional Association of Diving Instructors (PADI).

The latest addition to their ongoing collaboration is a take on Seiko's 'Sumo', (so named for its bulbous profile and the oversized 12 o'clock marker) with super-legible Lumibrite hands and markers, plus that signature 4 o'clock screwdown crown and Pepsi bezel.