Check the listing for details. Bluetooth Audio Receiver board Bluetooth 4.1 5.0 mp3 lossless decoder board Wire. Condition: New. Listed at 4.95 USD. Normal 0 false false false EN-GB X-NONE X-NONE Bluetooth Audio Receiver board Bluetooth 4.1 5.0 mp3 lossless decoder board Wireless Stereo Music Module Feature:Support Bluetooth 5.0.Support Automatic Connection Function.Support WAV+APE+FLAC+MP3 Lossless Decoding, Stereo Output.Specification:Power Supply: 3.7V-5VSNR: 90dBTHD+N: -70dBCrosstalk: -86dBDNR: 91dBSupport Profile: A2DP/AVCTP/AVDTP/AVRCP/HFPLOS: >15m (outdoor)USB Power Supply: Universal Micro USB 5V Power Supply3.7V-5V Power Supply Pad: Realize External 3.7V-5V Lithium Battery Power Supply LED Indicator: Blue Light On in Bluetooth Mode 3.5mm Stereo Sound Audio Interface: Standard 3.5mm Interface, Stereo Sound Output, Earphones can be Inserted, Power Amplifier and Other Equipment can be connectedColour: RedInstructions: Use a USB cable for power supply, the blue indicator light flashes, and enter the Bluetooth mode. When you hear the voice broadcast "The Bluetooth device is ready to pair", it means you enter the Bluetooth mode and wait for pairing. The mobile phone Bluetooth searches for "XY_BT" (the device Name of decoded version), Click and Connect. When you hear the voice announcement "The Bluetooth device is connected successfully", it means that the decoder board is successfully connected to the mobile phone, and the blue indicator light is on, you can play music, and the blue indicator light flashes.