Features: BT300 is an audio player that supports Bluetoothcompatible5.0 reception and USB flash drive USB flash drive playback supports losslessformats such as FLAC, etc Audio output to car speaker, home amplifiers, and powered speaker through built-inAUX audio cable Bluetoothcompatible or USB flash drive. It can upgrade traditional car speaker or power amplifiers without the need for Bluetoothcompatible reception and USB flash drives, and supports wireless connectivityand USB flash playback for Bluetoothcompatible devices such as smartphones and tablets. Insert USB into the cigarettepoint and charge the car with a power supply or 5V USB interfaces (be sure to check the voltage, do not use variable voltage fast charging) Specifications: Product Specification: Model: BT300 Bluetoothcompatible version: V5.0 Bluetoothcompatible APP support system: Androids Input: USB flash drive/Bluetoothcompatible5.0 USB flash drive capacity less than 64G (FAT32) USB music format: MP3/FLAC, etc Output: AUXaudio (gold plated anti button) Line length: 0.5meters/19.7in Product size: approx 57x23x16mm/2.24x0.91x0.63in Standards：UK/EU/AU/US Package Includes: 1PC BT300 USB Wireless Receiver note: Due to the different monitorsand light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviationdue to manual measurement.