I would try a local watch repair place first to see if its a standard type pin. If not you will need to follow this advice.
Watches bought from Kenneth Cole or a Kenneth Cole retailer are covered by a limited lifetime warranty. The warranty does not cover repairs needed because of normal wear and tear. You will need :
Check or money order for $8.50
Write your name, address, phone number and a description of the problem on a sheet of paper.
Put the watch and the paper with your information in a padded envelope.
Mail your package to:
Kenneth Cole Productions Inc. Attn: Returns Department 229 Hollie Drive Martinsville, VA 24112