Seiko Prospex

The Seiko Prospex, reference SFJ003P1, is a chronograph with a 42 mm steel case. The case is 12.9 mm thick, with a lug-to-lug measurement of 48.3 mm and a water-resistance rating of 100 metres. The movement is solar-powered calibre 8A50, which operates for approximately 6 months when fully charged. The dial is covered by a curved sapphire crystal with an anti-reflective coating. The movement has an accuracy of minus 15 to plus 15 seconds per month. A steel bracelet fastens with a folding clasp with a three-fold construction and push-button release.