Harry Potter Warner Brothers Batman Black Printed Apple Strap The apple band is 20mm wide but compatible with 38mm and 40mm apple watch series 1, 2, 3, 4, 5, 6 and SE. Depth: 12 MM Height: 215 MM Width: 44 MM Age Range: 3+ Case Diameter (in cm): 4.4 Case height (in cm): 21.5 Case Length (in cm): 1.2 Case Shape: Square Case Width (in cm): 4.4 Fastening Type: Strap Buckle Strap Material: Leather Black band with Yellow Batman logo Suitable for Apple Watch.