Seiko SPC227

The Seiko reference SPC227 is a chronograph with a 43.3 mm steel case. The case measures 12 mm thick, with a water-resistance rating of 100 metres. The movement is quartz calibre 7T04, which has a battery life of approximately 60 months. The watch has a Hardlex crystal. Fastening is by a three-fold clasp with a push-button release mechanism. Movement accuracy is plus or minus 15 seconds per month. The lug width measures 26 mm; elapsed time is measured in increments of 1/5 second. The dial has LumiBrite on the hands and indices.