Product Specifications: • Full frequency FM transmitter • Digital Display • Frequency channels: 87 .5-108.0MHZ • Audio format: MP3/WAV • With power off switch (USB direct connect) • Supports U Disk TF card player • Supports MP3, format music • Bluetooth answer, hang up, reject, redial calls, and other functions • Bluetooth stereo music play • Echo cancellation and noise • Suppression (CVC) technology a call • Automatic power-off memory function