I have a latex allergy and am going ahead w/ the surgery. Be sure to tell your doc and the hospital so that everything will be latex free. I doubt the band is latex but some of the equipment like gloves need to be changed for your surgery. Latex is on ballons and underwear. Do you have any problems blowing baloons or wearing underwear around the bands? Hope that helps. I doubt your watch has latex but may be leather or it could be a nickle allergy.