TopshopX is a company that is committed to electronic product development and sales. We provide reliable quality and inexpensive products. This benefit from that we constantly optimize the supply chain and keep reasonable operating costs. Customer satisfaction is our purpose.JIATAI M400 is a fashion portable blutooth wireless speakers.Support bluetooth connection playing music/audio, can be controlled by the audio files up/down in a music player, volume, play games, watch movies can transmit voice; - connecting the bluetooth stereo microphone, with calls, hands-free calls back to dial the phone call records in the last call; - digital MP3 player: support U disk, TF card, do not need to switch, insert TF card/U disk read automatically after the audio file playback; - designed for 3.5 mm headphone jack music cell phone and notebook computer design, general audio line 3.5 mm interface connection, can not even bluetooth play, also apply to MP3 / MP4 /'t a MP5 / iPod external play; product size: 170 * 45 * 60 mm; - the built-in rechargeable lithium battery, charge mobile use; use two 3 w speakers, according to the design of acoustic structure of science, built-in bass membrane, strengthen bass shake - by strengthening digital power amplifier IC, low power consumption, high power, sound strength in loud and clear - multiple button control: the volume and pattern can be adjusted separately What is included: Bluetooth speaker x 1USB charge cable x 1English User Manual x 1