1High Sound Quality: Has built in high performance decoding module, with Bluetooth 0 lossless transmission, high resolution high performance stereo sound quality more enjoyable. 2Dual Port Design: Double USB port design, allowing you to listen to music while charging, support for Xiaomi, for Huawei, for iPhone and other smart phones which support fast charging. 3Smart Chip: Inner intelligent identification chip can have the performance of efficient power conversion, can also reduce power loss, making you feel enjoy during use. 4Practical Tool: Can activate phone voice control and also compatible with APP voice control assistant, support one button Bluetooth connection, more accurate for voice broadcast. 5LED Light: Supports 7 colors LED backlight with inherent regulation, this Bluetooth FM transmitter will give you a visual display of colors during your driving.