Seiko Prospex Marinemaster

The Seiko Prospex Marinemaster, reference SBDX063, is a dive watch with a 42.6 mm steel case. The case is 13.4 mm thick, with a lug-to-lug measurement of 49.3 mm and a water-resistance rating of 300 metres. Self-winding calibre 8L35 contains 26 jewels and has a power reserve of approximately 50 hours. The watch has a dual-curved sapphire crystal with an anti-reflective coating on the inner surface. The dial has a date display; the watch has a folding clasp with push-button release and an extender. Movement accuracy is plus 15 to minus 10 seconds per day. A screw-down crown is part of the case. LumiBrite appears on the hands and indices.