If you are not satisfied with your purchase, you may return them within 30 business days of receiving your order for a refund or exchange. Before you return your purchase, please contact us at support@otofly.cn and include the following details: Order number Date of purchase Reasons of return A photo/video of the products you want to return We will do our best to solve your problem and contact you with further details. Please note that we are not responsible for products returned without contacting us. We only accept returned items when they are: Unused and still in its original packaging with the protective stickers on. In the same condition as when it was received including all accessories and manuals.