Seiko SSB255

The Seiko reference SSB255 is a chronograph with a 44 mm steel case. The case carries a water-resistance rating of 100 metres. The movement is quartz calibre 8T67, which has a battery life of approximately 36 months. Over the dial is a Hardlex crystal; the dial has a date display and a tachymeter. A three-fold clasp with push-button release fastens the watch. Movement accuracy is plus or minus 15 seconds per month. The lug width measures 22 mm; elapsed time is measured in increments of 1/5 second. The hands and indices are luminous.