Poweradd&trade; NFC-Enabled Wireless Bluetooth Audio Receiver Adapter for Home Stereo Sound System and Most Speakers - White Bluetooth 3.0 makes your sound systems receive streaming music from your smartphone or tablet. Long-range wireless performance: Stream music from up to 10 meters (33 feet) away from your speaker. NFC function makes connection and disconection easier and more convenient. Equipped with standard RCA and 3.5 mm jack (3.5mm to 2-RCA cable included), easy operation and wide compatibility. 5V USB output port can be used to charge most USB-charged devices. Compact design makes it easy to keep your entertainment center clear of random. Package contents: Poweradd&trade; bluetooth audio receiver, USB charging cable, 3.5mm to 2-RCA audio cable, user manual.