Cootree Wireless Bluetooth Stereo Music Streaming transmitter and receiver 2 in 1 Adapter with 3.5mm Stereo Output - Black High compatibility: the Cootree Bluetooth audio adapter's standard 3.5mm audio socket makes this gadget compatible with most of the latest audio devices,such as iPhone 6 6Plus,5 5S, iPads, HTC, Samsung devices, PC,Tablets Or MP3/MP4 Player. Connecting your PC, iPhone 6 6Plus 5s 5, iPod, iPad, Tablets Or MP3/MP4 Player to Speakers And Entertainment Systems, Home Or Car (such as TV, radio) Receiver and Transmitter 2 in 1: Transmitter Mode (TX): Transforms any device with 3.5mm audio-out jack into a Bluetooth-capable music streaming solution with no additional drivers required;Receiver Mode (RX): Turns any ordinary speaker system (with 3.5mm audio-in jack) into Bluetooth-enabled music streaming solution with no additional drivers required Great Design: The device is in portable,small,easy-carry design. The Secure Clip can keep the device with your pocket or other suitable things together to avoid this gadget from falling or losing Long Working and Standby Time: TX mode about 9 hours;RX mode about 8 hours;standby time up to 200 hours