During the warranty period, if the original manufacture of the material or workmanship of the product is deemed to be defective, COOAU will replace the product at no charge with the same or comparable product. Products and parts replaced under this warranty become the property of COOAU and are not returned to you. If products and/or parts require service after the warranty period expires, you must pay all labor, parts charges and round trip transportation fee. Warranty coverage terminates if you sell or otherwise transfer the product.