Wet-area device and method for manufacturing wet-area device

A wet-area device, comprising:

• a main part made of metal;
• a first layer provided on an outer surface of the main part;
• and
• a second layer provided on an outer surface of the first layer,
• a hardness of the second layer being greater than a hardness of the first layer,
• the first layer including a first unevenness at a side of the outer surface of the first layer, the first unevenness including a plurality of first recesses and a plurality of first protrusions,
• the second layer including a second unevenness at a side of an outer surface of the second layer, the second unevenness including a plurality of second recesses and a plurality of second protrusions and being arranged along the first unevenness,
• an average height of the first unevenness being less than an average length of the first unevenness,
• the average height of the first unevenness being greater than 1.3 μm and less than 5.7 μm, and
• a ratio of the average height of the first unevenness to the average length of the first unevenness being greater than 0.01 and less than 0.05.