Seiko Prospex challenges every limit, with a collection of timepieces for sports lovers and adventure seekers whether in the water, in the sky or on land. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative technology has changed global standards. We are constantly striving to bring ever greater reliability and safety to both professional and recreational divers. MOVEMENT Caliber: 8L35 Movement Type: Automatic with manual winding capacity Precision: +15 to -10 seconds per day Power Reserve: Approx. 50 hours Jewels: 26 Functions: 28,800 vibrations per hour (8 beats per second) Stop second hand function Date display CASE/BAND Material: Stainless steel Size: Thickness:13.4mm, Diameter:42.5mm, Lug-to-lug:49.3mm Crystal: Dual-curved sapphire crystal Crystal Coating: Anti-reflective coating on inner surface LumiBrite: LumiBrite on hands and index(es) and bezel Clasp: Three-fold clasp with secure lock , push button release with extender Distance Between lugs: 20 OTHER DETAILS Water Resistance: 300m / 1000ft diver's Weight: 196.0g Features: Unidirectional rotating bezel Screw-down crown Three-fold clasp with secure lock Screw case back REF: SLA077J1
