The new product is upgraded to V5.0 version! Backward compatible with V4.2, V4.1, V4.0 Support automatic connection function, support WAV APE FLAC MP3 lossless decoding, stereo output. 【bluetooth-compatible 5.0】 Features: USB powered Universal Micro USB 5V power supply 3.7-5V Supply Pad External 3.7-5V lithium battery power conversion LED indicator mode long blue light 3.5mm stereo audio interface Standard 3.5mm interface, output stereo sound source, plug in headphones, connect amplifiers and other devices Specifications: Power Supply ：3.7-5V SNR ：90dB THD N： -70dB Crosstalk -86dB DNR：91dB Support Profile A2DP/AVCTP/AVDTP/AVRCP/HFP LOS >15m Instructions: After the power is turned , the blue indicator lights up and enters the mode; the English “The device is ready to pair” is displayed, indicating that the mode is entered and waiting for pairing; the “XY_BT” searched by the mobile phone is the device name of the decoding board. , Click the connection, the decoder board prompts "The device is connected successfully", indicating that the decoder board and the mobile phone are connected successfully, you can play music. As shown below Specifications: 【bluetooth-compatible 4.1】 1.Parameter characteristics Power Supply 3.7-5V SNR 90dB THD N -70dB Crosstalk -86dB DNR 91dB Support Profile A2DP/AVCTP/AVDTP/AVRCP/HFP LOS >15m 2.Interface details USB powered Universal Micro USB 5V power supply 3.7-5V Supply Pad External 3.7-5V lithium battery power conversion LED indicator mode long blue light 3.5mm stereo audio interface Standard 3.5mm interface, output stereo sound source, plug in headphones, connect amplifiers and other devices Instructions: After the power is turned , the blue indicator lights up and enters the mode; the English “The device is ready to pair” is displayed, indicating that the mode is entered and waiting for pairing; the “XY_BT” searched by the mobile phone is the device name of the decoding board. , Click the connection, the decoder board prompts "The device is connected successfully", indicating that the decoder board and the mobile phone are connected successfully, you can play music.