Praise be to Allah, and may Allah’s peace and blessings be upon the Messenger of Allah, his family and his companions.   As to what follows:   In response to your question, we say, and with Allah Almighty lies all success:     One should not to buy this watch in the first place. But if one bought it not knowing what was written on it, until later, then it is obligatory to remove what is written on it by smearing, scratching, or other similar means.