Product Features: -Built-in signal antenna Signal no dead angle. -Supports USB devices such as USB stick, no network can also play songs at will. -Support for all devices with audio interfaces such as smart compatible audio devices. -NFC Bluetooth Audio Receiver. Make wired old devices Bluetooth smart devices seconds. -Upgrade to Bluetooth speaker. Simply plug in the speaker or amplifier UX interface and change Bluetooth in seconds. -Upgrade Bluetooth 5.0 technology. High-performance Bluetooth chip with strong performance. Support all kinds of models on the market speaker computer equipment. Specifications: -Input Port: Micro USB (power) -Wireless Version: 5.0 + EDR, Class 2 -Supports A2DP AVRCO -Wireless Range: 10 meters -Power Input: DC 5V Function: Supports NFC, Supports connecting two wireless devices, Supports U disk playback What's in the box 1 x Andowl NFC Receiver 1 x 3.5mm Aux Cable 1 x USB to micro USB cable 1 x AUX to RCA cable 1 x User Manual