<ul><li><p>Upgrade to a Bluetooth speaker: just plug in the AUX interface of the audio or power amplifier device, and the Bluetooth can be changed in seconds, eliminating the trouble of wiring, and enjoying the wireless splendid support USB playback</p></li><li><p>Plug and play: support mobile storage device U disk, you can play songs freely without internet</p></li><li><p>High-quality Bluetooth analysis chip, better transmission sound quality</p></li><li><p>Support NFC mobile phone device touch connection, no need to connect manually</p></li><li><p>Smart Bluetooth devices, widely compatible, support all audio devices, smart compatible audio devices</p></li></ul><p><strong>Specification:</strong></p><ul><li><p>Interface: Stereo analog/AUX3.5mm</p></li><li><p>Performance: HIFI level</p></li><li><p>Bluetooth version: 5.0</p></li><li><p>Decoding chip: Bluetooth 5.0</p></li><li><p>Effective distance: 15 meters</p></li><li><p>Frequency response range: 10Hz-20kHz</p></li><li><p>Signal to noise ratio: &gt;110dB</p></li><li><p>Distortion + noise: &lt;0.02%</p></li><li><p>Output impedance: 75 ohms</p></li><li><p>Size: 109*73*29mm</p></li></ul>