We will gladly replace any defective unit at no additional cost to you within 30 days of purchase, pending availability of the product. Should the product be out of stock we will refund your PayPal account in full. Please contact us directly though the store messaging for information on returning your defective item and receiving a replacement or refund. 2. please leave us the positive feedback and good detailed seller rating after you received our package and satisfied with it. as you know, every seller works hard for the positive feedback. and if you have any question with your purchase or you do not satisfied with the item ,please do not take any action as open case on ebay or paypal before contacting us ,it will be to our mutual disadvantage, and you can just fell free to contact with me ,.