Seiko SKK878

The Seiko reference SKK878 has a 33.6 mm steel case. The case is 8.3 mm thick, with a lug-to-lug measurement of 41 mm and a water-resistance rating of 100 metres. The movement is quartz calibre 7N32, which contains 1 jewel and has a battery life of approximately 60 months. The watch has a sapphire crystal. Fastening is by a three-fold clasp with a push-button release mechanism. The movement has an accuracy of plus or minus 15 seconds per month. The case has a lug width of 17 mm. The hands and indices carry LumiBrite.