1、Support near field pairing, automatically turn on or turn off Bluetooth for wireless connection during pairing. 2、3.5mm for AV audio output interface, more compatible, support for U disk playback. 3、The bluetooth effective distance is 15m/49.2ft, the transmission speed is fast, and the distance is wide. 4、Press the power button for 3 seconds to turn on and it will automatically connect to the phone or other equipment you used last time. 5、After turn on, insert the U disk into the USB port and it will automatically switch to the USB flash drive to play. Item Type: Bluetooth 5.0 Receiver Material: ABS Color: As Picture Shown Weight: Approx. 159.0g/5.6oz Frequency Response Range: 10Hz-20KHz Signal to Noise Ratio: >110dB Distortion + Noise: <0.02% Bluetooth Version: 5.0 Battery: Lithium Battery 500mAh(Include) Interface: Stereo Analog/AUX3.5MM Impedance: 75Ω Decoding Chip: V5.0 Effective Distance: 15m Life Time: 15 hours How to use Bluetooth pairing connection 1. First connect the USB power supply line to the 5V power supply. After connecting to the product, you will see the blue indicator light flashing in the "Indicator Window" and hear the prompt sound, which indicates that the desktop Bluetooth audio receiver has successfully entered the pairing state. 2. Turn on the Bluetooth function of the mobile phone or other device, search for the device named for "XYH-B30 Pro", and click Connect after the search is successful. 3. After clicking connect, the blue light of the "indicator window" flashes slowly and you hear the prompt tone. This indicates that the device is successfully connected. Note: The later time you use it, you only need to press the power button for 3 seconds to turn it on to automatically connect to the mobile phone or other equipment you used last time. Near field paired connection 1. First connect the USB power supply line to the 5V power supply. Seeing the blue indicator light in the "indicator window" flashing and hearing the prompt sound indicates that the desktop Bluetooth audio receiver has successfully entered the pairing standby state. 2. Turn on the function of the mobile phone or other device. 3. Put the induction area of the mobile phone against the induction area of the desktop Bluetooth audio receiver for about 2 seconds, see the dialog box on the mobile phone, and then click connect. (If the dialog box pops up and you need to enter the pairing , enter "0000" If not , please ignore it.) U disk playback After the product is powered on, insert the USB flash drive into the USB port, and it will automatically switch to the USB flash drive to play. If you need to switch Bluetooth, just press and hold the play button. 1 x Bluetooth 5.0 Receiver 1 x 3.5mm Cable 1 x For RCA Cable 1 x USB Cable 1 x Manual