G-Cord&reg; Bluetooth Transmitter & Receiver Wireless Stereo Audio Adapter Car Kit Transmitter and Receiver Function: One-button switch to shift between transmitter (TX) and receiver (RX) mode Transmitter (TX) Mode: Plug in to your non-Bluetooth device and pair with your Bluetooth speaker or headset. Receiver (RX) Mode: Plug into your non-Bluetooth speaker and pair with your Bluetooth phone or MP3 player Compatible with car stereos, home stereos/speakers, headphones and most mobile devices with 3.5mm AUX port Includes: G-Cord Bluetooth 2-in-1 transmitter and receiver adapter, Micro USB Charging Cable, 3.5mm Audio Cable, User Manual Warranty Backed by an G-Cord 1-year Limited Warranty