Seiko Prospex Sea

The Seiko Prospex Sea, reference SSC613, is a chronograph with a 43.5 mm steel case. The case measures 13.8 mm thick, with a water-resistance rating of 200 metres. Solar-powered calibre V175 operates for approximately 6 months when fully charged. Over the dial is a Hardlex crystal; the dial has a date display. The watch has a three-fold clasp with push-button release and an extender. LumiBrite is applied to the hands and indices; movement accuracy is plus or minus 15 seconds per month. The lug width measures 20 mm; elapsed time is measured in increments of 1/5 second. A screw-down crown is part of the case.