UCTRONICS Bluetooth 5.0 Mini Audio Receiver Board, Portable HiFi Stereo Music Pre Amplifier for Headphone, Car Amplifier, Home Sound System, DIY Speaker

The New Version Of U622601 Bluetooth 5.0: has longer transmission distance and more stable performance in decoding and outputting audio Power Supply: DC 3.7V ~ 24V, via micro USB or extension power supply interface Audio Output: 3.5mm AUX audio output or extension 2.54mm 3P interface Volume Adjustable: turn right the adjust button to increase volume, turn left to decrease volume; press the button to play/stop the audio; Mini and Portable: 1.18"*1.73"mm, suitable for various narrow installation space.