What is the ruling on a man wearing a wristwatch made of copper and leather, and is this watch affected by the rulings on the prohibition of gold and iron and imitating women?

The basic principle regarding things is permissibility, unless there is evidence indicating their prohibition. Therefore, a man is permitted to wear whatever he wishes from metals and leathers, except what the Sharia has forbidden, such as gold for men; wearing it is forbidden for them. As for iron, there is no harm for a man in wearing a watch made of it, or containing some of it, due to the Hadith: "Seek (something for a dowry), even if it be an iron ring." Similarly, there is no harm in a watch made of copper, and the Hadith mentioning the prohibition of wearing rings of copper is weak.

Sheikh Muhammad ibn Ibrahim mentioned that eyeglasses are permissible for both men and women to use, except for those heavily gilded, which are forbidden for men only. As for rings, whether made of gold, silver, iron, copper, or lead, they are not absolutely forbidden, with the exception of gold rings for men. Some scholars disliked iron, brass, and copper rings, but the more correct opinion is the permissibility of iron rings. As for watches, their ruling is the same as that of eyeglasses.

Regarding wearing items made of leather, it is permissible based on the original principle, even if it is the skin of a deceased animal that has been tanned. The preponderant opinion is that all skins become purified by tanning.