Seiko SSB371

The Seiko reference SSB371 is a chronograph with a 42.7 mm steel case. The case is 13.9 mm thick, with a lug-to-lug measurement of 49.1 mm and a water-resistance rating of 100 metres. Quartz calibre 8T67 has a battery life of approximately 36 months. The watch has a curved Hardlex crystal; the dial has a date display. The dial has LumiBrite on the hands and indices. Movement accuracy is plus or minus 15 seconds per month. The lug width measures 21 mm; elapsed time is measured in increments of 1/5 second. A leather strap closes with a three-fold clasp with push-button release.