Rqhdesign Women's Men's Waterproof Quartz Black sport Nylon Strap Sport Ultra Thin Watch for Gift Case Diameter: 41cm(approx)/Case Thickness: 0.9cm(approx) Band Width: 2.1cm(approx)/Band length: 26cm(approx) Precise movement. Battery included in the watch. Special dial design draws much attention from buyers. Your best choice for everyone as a gift. Fashionable, very charming for all occasions.