Seiko SSB387

The Seiko reference SSB387 is a chronograph with a 41.6 mm titanium case. The case is 14.2 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 dial is covered by a curved Hardlex crystal; the dial has a date display. The watch has a three-fold clasp with push-button release. 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. LumiBrite is applied to the hands and indices.