Shenzhen J. Y. M. Digital Technology Co., Ltd. is a speaker manufacturer and exporter specilized in various of Portable Mini Speakers and Card Speakers, widely used in audio players, such as MP3/MP4/MP5/CD/VCD/DVD/Phone/Computer and so on, with top quality, low price and quality assurance. Our patanted speakers J1 and J3 possess not only the above functions but also can be used independently as audio player and memory device. Plz feel free to contact us if you are interested in our products. We are ready to provide you with best offer and service. Plz note that free sample will be shipped as per request.