Seiko SSC139P9

The Seiko reference SSC139P9 is a chronograph with a 42.8 mm steel case. The watch has an alarm. The case measures 11.5 mm thick, with a water-resistance rating of 100 metres. Solar-powered calibre V172 operates for approximately 6 months when fully charged. The dial has a date display; the clasp has a three-fold construction with push-button release. LumiBrite is applied to the hands and indices; movement accuracy is plus or minus 15 seconds per month. The case has a hard coating; the lug width measures 22 mm; elapsed time is measured in increments of 1/5 second. Over the dial is a Hardlex crystal.