Seiko Prospex Marinemaster

The Seiko Prospex Marinemaster, reference SBEN011, is a dive watch with a 39.5 mm steel case. The case is 12.3 mm thick, with a lug-to-lug measurement of 47.2 mm and a water-resistance rating of 200 metres. Self-winding calibre 6L37 contains 26 jewels and has a power reserve of approximately 45 hours. The watch has a folding clasp with push-button release and an extender. The hands and indices carry LumiBrite. A see-through case back provides a view of the movement. Movement accuracy is plus 15 to minus 10 seconds per day. A box-shaped sapphire crystal with an anti-reflective coating on the inner surface covers the dial.