Mpow Bluetooth 4.1 Receiver with Noise Isolator for Hi-Fi Stereo Sound, Wireless Bluetooth Audio Adapter for Home Stereo System, Music Streaming Receiver with A2DP/AVRCP (No Battery, Always Standby) SUPERIOR SOUND QUALITY FROM MPOW V4.1 MUSIC RECEIVER: Featured with Bluetooth 4.1 & Mpow Ground Loop NoiseIisolator, Mpow enables you to fully enjoy high quality music and sounds through non-Bluetooth home/car stereo systems wirelessly. Bluetooth 4.1 is characterized by stable connectivity, exceptional signal stability and less music lag, which contributes to more enjoyable music experience. ALWAYS STANDBY FOR YOU: Just keeping power on, Mpow Bluetooth audio adapter could be served you at any time. You can press the multifunction button to play or pause the music. DUAL CONNECTION: Mpow advanced Bluetooth 4.1 technology could connect two devices at the same time. You can swift between different devices as you like. WIDE COMPATIBILITY: Mpow new version Bluetooth music receiver enables your non-Bluetooth speakers or home/car stereo systems with Bluetooth function, to stream music by paired with your smart phone/tablet/PC and other Bluetooth devices. ONE-BUTTON COMPACT DESIGN: You can simply pair your smart phone or tablet to Mpow Bluetooth music adapter with the multifunction button, needless of complex connection and setting. Also when there is no obstacle, the Bluetooth range is up to 10 meters (33ft).