For true watchmakers, adventure sports, whether on the sea, on land or in the sky, present the greatest challenges of all. Since Seiko made its first diving watch in 1965, Seiko has been exceeding the expectations of those whose sports require watches with truly professional specifications. Now, Seiko Prospex brings together all Seiko’s sports watch expertise in one collection. Technical Data: Caliber Number: 4R35 Movement Type: Automatic with manual winding Power Reserve: Approx. 41 hours Jewels: 23 Functions: Stop second hand function Functions: Date display Case Material: Stainless steel Case Size: Thickness: 12.3mm Case Size: Diameter: 41.7mm Case Size: Lug-to-lug: 49.5mm Crystal: Hardlex LumiBrite: LumiBrite on hands, index(es) and bezel Clasp: Three-fold clasp with secure lock, push button release with extender Distance Between Lugs: 20mm Features: Water Resistance: 200m / 660ft diver's Magnetic Resistance: 4,800 A/m Weight: 170.0g Unidirectional Rotating Bezel Screw-Down Crown Three-Fold Clasp with Secure Lock Screw Case Back
