Seiko SGEH81

The Seiko reference SGEH81 has a steel case measuring 40.4 mm across. The case has a thickness of 9.7 mm, with a water-resistance rating of 100 metres. The movement is quartz calibre 7N42, which contains 1 jewel and has a battery life of approximately 60 months. The dial is covered by a curved Hardlex crystal. The movement has an accuracy of plus or minus 15 seconds per month. The distance between the lugs measures 20 mm. The folding clasp has a three-fold construction and a push-button release mechanism.