SEIKO Prospex SPB257J1 The Black Series Limited Edition 5500pcs Automatic Watch

Movement Caliber Number 6R35 Movement Type Automatic with manual winding Accuracy +25 to -15 seconds per day Duration Approx. 70 hours Exterior Case Material Stainless steel (hard coating) Crystal Curved sapphire crystal Crystal Coating Anti-reflective coating on inner surface LumiBrite LumiBrite on hands, index(es) and bezel Band Material Polyester Other Details Water Resistance 200m / 660ft diver's Case Size Thickness: 13.2 ㎜ Diameter: 42.7 ㎜ Length: 41.6 ㎜ Weight 106.0 g Other Specifications An additional silicone strap is included LIMITED EDITION on the case back Screw case back Screw-down crown Serial number engraved on the case back Unidirectional rotating bezel Other Features 24 jewels Date display Stop seconds hand function