DROK Black Handy NFC Bluetooth 3.0 Wireless Audio Receiver DC 5V Stereo Speaker Adapter with RCA to 3.5mm Jack Connector USA Plug Power Charger for Home Stereo System Smartphone Tablet Pad etc With Bluetooth 3.0 and standard 3.5mm jack AV output, compatible to all bluetooth audio device and most home stereo system. NFC function makes connection and disconection easier and more convenient. Up to 10m (30 feet)wireless connection and high sound quality, best hearing enjoyment without wires. Multiple functions with the tiny receiver: attend the call, make a call, change music ,etc. Package includes: Bluetooth Speaker Receiver;USA Power Adapter;USB to Micro USB Cable;RCA to 3.5mm output jack connector.