<ul><li><p>This product uses Bluetooth 5.0 main control chip, JL6925A, true stereo 5.0 chip</p></li><li><p>Good sound quality, support automatic connection function, support WAV+APE+FLAC+MP3 lossless decoding, stereo output</p></li><li><p>Equipped with 3.7-5V power supply pad to realize the external 3.7-5V lithium battery&nbsp;</p></li><li><p>Standard 3.5mm stereo audio interface outputs stereo sound source, headphones, and other equipments can be connected to it</p></li><li><p>Installed with true stereo 5.0 chip ensures the high sound quality</p></li></ul><p><strong>Specification:</strong></p><ul><li><p>Power Supply: 3.7-5V</p></li><li><p>SNR: 90dB</p></li><li><p>THD+N: -70dB</p></li><li><p>Crosstalk: -86dB</p></li><li><p>DNR: 91dB</p></li><li><p>Support Profile: A2DP/AVCTP/AVDTP/AVRCP/HFP</p></li><li><p>LOS: &gt;15m</p></li><li><p>Size: 30mm*30mm</p></li><li><p>Product weight: 6 g</p></li></ul><p><strong>Interface:</strong></p><ul><li><p>USB power supply: Universal Micro USB 5V power supply, 3.7-5V power supply pad, realize external 3.7-5V lithium battery power supply modification</p></li><li><p>LED indicator: blue light in bluetooth mode is on</p></li><li><p>3.5mm stereo audio interface: standard 3.5mm interface, output stereo sound source, can insert headphones, connect power amplifier and other equipment</p></li></ul><p><strong>Pairing:</strong></p><ul><li><p>Connect to the power supply, the blue indicator light flashes, enter the Bluetooth mode</p></li><li><p>When you hear the voice announcement &quot;The Bluetooth device is ready to pair&quot;, it means that you have entered Bluetooth mode and waited for pairing</p></li><li><p>After the mobile phone Bluetooth searches for &quot;JH-BT&quot;, click Connect</p></li><li><p>When you hear the voice announcement &quot;TheBluetooth device is connected successfully&quot;, 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</p></li></ul>