Seiko SNP100

The Seiko reference SNP100 has a 46.3 mm steel case. The watch has a perpetual calendar. The case measures 12.4 mm thick, with a water-resistance rating of 100 metres. The movement is quartz calibre 7D48, which contains 16 jewels and has a battery life of approximately 6 months. The clasp has a three-fold construction with a push-button release mechanism. The movement has an accuracy of plus or minus 15 seconds per month. The lug width measures 22 mm. The dial is covered by a sapphire crystal with an anti-reflective coating on the inner surface.