Welder The Bold K20 46mm K20-504 is a super very impressive Gents watch. Material of the case is Stainless Steel while the dial colour is Black. This model has got 50 metres water resistancy - it can be submerged in water for periods, so can be used for swimming and fishing. It is not reccomended for high impact water sports. We ship it with an original box and a guarantee from the manufacturer.