Seiko Prospex

The Seiko Prospex, reference SBDL103, is a chronograph with a 39 mm steel case. The case is 13.3 mm thick, with a lug-to-lug measurement of 45.5 mm and a water-resistance rating of 100 metres. Solar-powered calibre V192 operates for approximately 6 months when fully charged. The dial has a date display, small seconds and a tachymeter. A three-fold clasp with push-button release fastens the watch; the hands and indices carry LumiBrite. Movement accuracy is plus or minus 15 seconds per month. The watch has magnetic resistance; elapsed time is measured in increments of 1/5 second. A curved sapphire crystal with an anti-reflective coating on the inner surface covers the dial.