Seiko Prospex Prospex SPEEDTIMER SPB513

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MechanicalMovement Caliber Number: 6R55 Movement Type: Automatic with manual winding Precision: +25 to -15 seconds per day Power reserve: Approx. 72 hours(3 days) Jewels: 24 Functi ons: Stop second hand function Case/Band Case Material: Stainless steel (super hard coating) Case Size: Thickness:12.0mm, Diameter:39.5mm, Lug-to-lug:44.5mm Crystal: Curved sapphire crystal Crystal Coating: Anti-reflective coating on inner surface LumiBrite: LumiBrite on hands and index(es) Clasp: Three-fold clasp with push button release, Bracelet Length, 197.0 Distance between lugs: 20 Other Details Water Resistance: 20 bar Magnetic Resistance: 4,800 A/m Weight: 154.0g Features: Inner rotating ring with countdown scale, Screw case back Show more