Kissmart Bluetooth FM transmitter Wireless Streaming Music Radio Adapter Support Handfree Calling for Car Hi-Fi FM stereo transmitter allows you to enjoy your favorite music Using Bluetooth technology with ECHO canceling, more clear on phone calling Power directly supplied by USB 5V car charger and the bluetooth fm transmitter will also be charging at the same time Provides the ability for hands-free calls and audio streaming on the road Supported model: All audio and video player with audio output (for example, Mobile phone /MP3/MP4/MID And other digital products)