Seiko SUP447

The Seiko reference SUP447 has a steel case measuring 30.5 mm across. The case has a thickness of 6.8 mm, with a lug-to-lug measurement of 37.7 mm. The movement is solar-powered calibre V115, which operates for approximately 12 months when fully charged. The dial is covered by a curved Hardlex crystal. The movement has an accuracy of plus or minus 15 seconds per month. The movement has an overcharge prevention function. The folding clasp has a three-fold construction and a push-button release mechanism.