Ruling on Wearing a Gold or Imitation Gold Watch
Question: Is it permissible to wear a gold watch or a yellow watch with the color that looks as if it is gold colored?
Answer: This is permissible for the women. As for the men, then this is not permissible if the watch is (made of) gold or is gold-plated due to the statement of the Prophet (Sallallaahu 'Alayhi wa Sallam): "Gold and silk are allowed for the women of my Ummah, but forbidden for its men." [1]
If it is imitation gold and is not really (made of) gold, it is still better for a man to leave it to protect his honor against accusations of having opposed the pure sharee'ah.
Footnotes: [1] Sunan at-Tirmidhee
Source: Majmoo' Fataawa wa Maqalaat - Part 8