The Radiator W*2 3 extra business days for custom engraving service More Info The case: 100% Black Sandalwood and Stainless Steel. This wood has a high density which together with the steel completely blocks the water from getting into the movement. Its color ranges from dark brown to black with light brown wood grains. Black Sandalwood will turn darker and shinier when used for a long time The straps: the streamlined mesh band is micro adjusted for all wrist sizes