Seiko SSC721

The Seiko reference SSC721 is a chronograph with a 43.2 mm steel case. The case measures 12.2 mm thick, with a water-resistance rating of 100 metres. The movement is solar-powered calibre V176, which operates for approximately 6 months when fully charged. Over the dial is a Hardlex crystal; the dial has a date display and a tachymeter. A three-fold clasp with a push-button release mechanism fastens the watch. The movement has an accuracy of plus or minus 15 seconds per month. The lug width measures 22 mm. The dial has luminous hands and indices.