YouYouPifa Unisex's Rubber Strap Quartz Square LED Watches (Black Strap / Grey Dial) 100% Brand New Case Diameter: 40 mm Inch, Case Thickness: 10 mm / 0.39 Inch, Case Width: 27 mm / 1.06 Inch, Band Length: 19.5 cm Movement: Quartz Daily Water Resistant please don't put it in Water