LDream Bluetooth 4.0 Transmitter with 3.5mm Aux Input High-fidelity systems: bluetooth V4.0 + EDR makes for added data transfer rate and reduced latency in sound transmission, ensuring high quality stereo sound suited for waching TV/ movies. Vast compatibility: compatible with TV, PC, CD player, iPod, Kindle Fire, MP3 and all devices with 3.5mm audio-out jack into a Bluetooth-capable music streaming solution with no additional drivers required. Energy saving: quality longer play built-in lithium battery, powers off automatically if pairing fails for over 3 minutes. Easy to operate: no Software Needed, pairs to your bluetooth device simply and swiftly, allows you to enjoy the stereo music without wire restriction or watch TV quietly (not for answering calls) Warranty policy: 18 months free reliable warranty.