Bluetooth version 4.0 is support for Bluetooth calls, Bluetooth music transmission, caller number It is support TF card / U disk play and card reader function, and also support MP3/WMA format music USB charging 2.1A can be used for external expansion portable device functions, which is suitable for charging all mobile phones, tablets and other electronic products 1.3 inch LED dot matrix screen can display frequent point , file name and working status information Support one-click menu settings language, play mode, and sound mode Support power-off memory and folder play function AUX input and output function, boot display voltage One button switch machine, pause, answer / listen / up and down button function Specifications: Product model: BT-08 Output current: DC 5V/2.1A Display screen: LED dot matrix screen Interface type: Single USB port Bluetooth version: 4.0+EDR Temperature: 0-40C Expansion: TFU disk (128GB Max) Frequency: 87.5-108MHz Music format: MP3 / WMA Effective distance: 10m Used model: DC 12V-24V Product size: 12 x 12 x 4.5cm Product weight: 60.6g Package included: 1 x Bluetooth Car MP3 Player 1 x Aux Cable 1 x Chinese and English User Manual Other items not included