Seiko is offering $10.00 cash back for every pair of Seiko 1.67 Proceed II Short and Proceed III Super Short lenses that you purchase from now through November 30, 2006. To collect, all that is necessary is to complete a mail in form that we will supply (when we get them) with copies of your invoices from Advance Optical as proof of purchase. There is no minimum and no limit to what you can earn on this promo.