The material of the Roamer Gran Sportivo Box Set men’s watch 978818 41 75 20 watch case is stainless steel, its color is silver, the material of the strap is stainless steel and its color is silver. The diameter of the watch case is 41 mm, its shape is wheel. The glass of the watch is sapphire (scratch free), its mechanism is quartz, and its water resistance is 10 atm (100m) (suitable for swimming).