Features: brand new and high quality Good sound quality,bluetooth-compatible,u-disk and tf cards playback,for most for cars,enjoy the fun that technology brings you. This bluetooth-compatible transmitter is well for most of the smartphones and more devices that equipped with bluetooth-compatible function. Supports wav,mp3 format music,clear without noise. Using 2 customized 45mm high-power speakers,the volume is twice that of ordinary speakers. The speaker has a built in micriophone and intelligent noise reduction,so you don'for t need to disconenct the bluetooth-compatible connection. Specifications: Material:Plastic Built-in Battery Capacity:1200mAh Charging Voltage:DC5V 500-1000mAh Size:Approx.175x73.5x54mm/6.89x2.89x2.13in Color:Black,Rose Gold,Gold Net Weight:460g Package Includes: 1x Car MP3 Music Player note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.