Royal London Men’s Stainless Steel Case Black Leather Strap Watch, Men’s royal London watch. The material most suited for the production of this model is stainless steel. The strap material and its fastening are also carefully selected. In the case of these watches, it’s leather. Royal London are resistant to external moisture and splashing water. They also resist showering. However, they are not intended for swimming or diving. Like all others, watches require occasional care. They do not suffer from occasional surface cleaning in the form of dust and other minor dirt. Then, in conjunction with human sweat, they create an unpleasant seashell that does not work best.