1LED digital tube display can display frequency, song serial number and working status information. 2Automatically detect car battery voltage, voice reminder, support instant voltage check. 3Bluetooth smart MP3 player, support mobile phone / network / music App software playback. 4Just find an unoccupied station and the boosted Fm signal and static-cancellation technology broadcast a great listening experience. 5Solid Bluetooth and Fm connections stream music straight from your phone to your cars sound system. 6Support mainstream map App navigation voice broadcast and support for Qq / WeChat other software language playback function. 7Support lossless audio decoding, high resolution, high performance stereo, support multiple lossless music formats such as Wma, Ape, Flac, Wav. 8Support memory card and U disk extended playback, support key operation to switch folder playback, support playback breakpoint memory function. 9Latest version 5.0 Bluetooth chip, more stable connection, faster automatic connection. 10Dual USB ports with dvanced technology deliver simultaneous high-speed charging to driver and passenger. 11Knob design, one-key operation to adjust volume / answer / hang up / call back.