1、LED digital display can show frequency point, song number and working status information. 2、Automatic detection of car battery voltage with voice reminder, support real‑time voltage check. 3、Bluetooth smart MP3 player supports mobile phone/network/all kinds of music APP software playback. 4、Support mainstream map APP navigation voice broadcast and for QQ/for WeChat other software language playback functions. 5、Support lossless audio decoding with high resolution and performance stereo, support WMA, APE, FLAC, WAV and other lossless music formats. 6、The latest version 0 Bluetooth chip makes the connection more stable, and the automatic connection is faster. 7、Dual USB with intelligent identification for fast charging. Support memory card and U disk extended playback. 8、Support playback breakpoint memory function, support button operation to switch folder playback. 9、Equipped with knob design, one-click operation to adjust the volume / answer / hang up / call back. 1 x Car Bluetooth1 x Manual Item Type: Car BluetoothMaterial: ABSWorking Voltage: 12V-24VBluetooth Version: Bluetooth 5.0Effective Distance: Approx. 10m/11ydLaunch Distance: Approx. <5m/ 5.5ydSupport Memory Card/U Disk Capacity: ≤64GB (Not Included)Voltage Detection Range: 6-30VPower Supply Mode: Cigarette Lighter Power SupplyFile Support Type: MP3 / WMA / APE/ FLAC ​/ WAVFast Charging Version:Output 1: QC 3.0 5V/ 2.4A, 9V/ 1.75A, 12V/ 1.25AOutput 2: 5/ 2.4A (Single Port Maximum)