Features: Lossless Audio Quality: Upgraded intelligent Bluetooth-compatible 5.0 transmission lossless audio quality more stable low-power links 360 stereo surround sound. Stable: Elastic metal contacts on both sides stable and suitable for cigarette lighter ports of different specifications ensuring no power outage during bumpy roads. Dual USB Charging:3.1A dual USB smart charging charging both tablet and phone simultaneously without affecting charging speed professional and safe. Power-Off Memory: Automatically connection memory frequency song and volume restart after powered off start play from the first sentence of the song which disconnected due to power broken. After-sales Service: If you have any problem please contact us immediately we will help you solve it as soon as possible. Specifications: Material: ABS Working Voltage: 12V-24V USB 1 Output: 5V/1A USB 2 Output: 5V/3.1A Music Format: MP3/WMA/WAV/FLAC/APE Bluetooth-compatible Version: 5.0 Bluetooth-compatible Transmission Distance: 10m Notes: Please note that due to the influence of light and screen slight chromatic aberration is acceptable. Please allow slight measurement error due to manual measurement. includes: 1 *Car MP3 Player "