Seiko Prospex Sea

The Seiko Prospex Sea, reference SRPA21, is a dive watch with a 45 mm steel case. This is a special edition. The case measures 13.4 mm thick, with a water-resistance rating of 200 metres. Self-winding calibre 4R36 contains 24 jewels and has a power reserve of approximately 41 hours. Over the dial is a Hardlex crystal; a three-fold clasp with push-button release and an extender fastens the watch. The dial has LumiBrite on the hands and indices. The case has a screw-down crown; the lug width measures 22 mm. Day and date are displayed on the dial.