As sleek as it comes. Our Harrison Wristwatch features a crocodile grain leather strap in black, a stainless steel case, two hands and water resistance up to 3 ATM. (Style side note: ATM refers to “ATMospheres” and the number before it refers to the number of atmospheres of pressure the watch can withstand before leaking.) Case Diameter: 41,5 mm Case Thickness: 6 mm