On the behalf of Headtron Technology Co., Ltd. We appreciate you are interested in our products. We are the Taiwan based manufacturer specialized in MP3, MP4. We supply 75% of our products to the customers in Europe, North America and South America, including wholesalers, supermarket and retailers. We are specialized in the developing, design, manufacture, marketing, and after-sale service for MP3 and MP4 products. OEM/ODM orders are accepted. Headtron Technology Co., Ltd. provides our products and services with a full warranty. If you are interested in our products or would like to know more about our company, please feel free to contact us at your earliest convenient.