• Bluetooth-compatible hands-free calling USB/PD port with charging function 
• Echo cancellation and noise processing during calls
• Stereo Bluetooth-compatible and FM transmitter technology
• Auto power off memory function; Voltage detection function
• Designed with colorful ambient breathing light

Specifications:

• USB/Bluetooth-compatible function: support
• Music format: MP3/WAV
• Cigarette lighter: DC12V-24V power supply
• Output current: 5V 3.1A (Max)
• Bluetooth-compatible version: 5.3 
• FM transmit frequency: 87.5-108Mhz