Model: SSK025 Caliber Number 4R34 Automatic Movement with manual winding Power reserve Approx. 41 hours Jewels 24 24-hour hand (dual time display function) Stop seconds hand function Stainless steel Case (hard coating) Case Thickness:13.6mm Case Diameter:39.4mm Lug-to-lug:47.9mm Crystal Curved Hardlex LumiBrite on hands and index(es) Calfskin Band Distance between lugs 20 Water Resistance 10 bar Magnetic Resistance 4,800 A/m Weight 79g See-through & Screw case back. Higher-end orders will require a signature, so please specify an address which you can be available to receive the package and sign for it. We always strive to provide its customers with the highest quality of service. Please note that we will not accept any items with scratches, marks, blemishes or if the security tag has been removed, tampered with or altered in any manner.