Features 1、Upgrade Bluetooth speaker, just plug in the speaker, the AUX interface and change the Bluetooth in a few seconds, suitable for all types of speakers. 2、Support USB playback, plug and play. Support USB memory stick, you can play songs at will without internet. 3、Smart Bluetooth scheme is widely compatible. Support for all devices with audio interfaces. 4、NFC connection: NFC function can be connected at the touch of a button. It supports NFC mobile devices to click to connect without manual connection. 5、NFC tap connection is easy to use, Bluetooth receiving wireless interface, 15m/49.2ft signal transmission, barrier‑free signal stability, USB Smart Play supporting USB device playback, Bluetooth 5.0 interface and more powerful functions, lossless delay HD sound transmission. 6、Upgrade Bluetooth 5.0 technology, high‑performance Bluetooth chip, support all kinds of models on the market. Specification Condition: 100% Brand New Item Type: Bluetooth Receiver Material: ABS Color: As Pictures Shown Weight: Approx. 158g/5.6oz Frequency Response Range: 10HZ-20KHZ Signal Noise Ratio:﹥ 110db Distortion + Noise: ﹤0.02% Bluetooth Version: Bluetooth 5.0 Power Supply: USB 5V Bluetooth Name: BLS-B10 Effective Distance: 15 meters / 49.2 ft Interface: Stereo Analog AUX3.5mm Decoding Chip: CSR5.0 Support A2D / AVRCP Package List 1 x Bluetooth Receiver 1 x 3.5mm Audio Cable 1 x 2 in1 Audio Cable 1 x USB Cable 1 x Manual