for 10 years now daily in school and in university now. I have primarily worn vintage watches from the 1950's to 1970's daily, and I have never had one get magnetized. I would be on my laptop for several hours daily, and for the past couple of years as much as 8 - 10 hours a day. I am not saying silicon is a marketing gimmick, but I certainly pay no attention or extra favor to the antimagnetic capabilities of many modern watches. Just my two cents.