Nationite RX41 Portable Bluetooth Audio Receiver w/Built-in Battery - Stream From Your iPhone or Other Bluetooth Device To Your Old Stereo System Stream your music via Bluetooth from your music sources, such as an iPhone, Android device, Tablets or PC to your audio devices at home or in the car. Give a new lease of life to your older stereo systems that don't have Bluetooth, only 3.5mm audio input is needed on your taget audio device. Simple, quick, painless pairing, the RX41 will remember the last device that was paired with it. Bluetooth 3.0 + EDR Class II, supports HSP, HFP, A2D) & AVRCP - Pretty much universally compatible. Built-in recharagble battery allows you to use it on the go without needing to be plugged into a power source. Fast charging and can be operated even while charging. Compatible with all Bluetooth enabled devices: iPhones, Smartphones, Samsung, iPods, iPads, Bluetooth Laptops etc. Compatible with various brands of docks, stereos and speakers; Bose, Roberts; Pure; Sony; Phillips; B&W; Klipsch.