... -Free Communicating and Mobile Bluethooth Stereo Music Player System *Bluetooth Mirror + TTS + Phonebook + Car MP3 + Earpiece + FM Features: 1. ... technology, DSP technology. 3. Incoming caller ID display with LCD in English 4. Incoming caller ID read in English.( ... transmitter,frequency(87.5~108.0MHz) selection, digital display mirror display frequency, RF output stably, more frequency for selection, ...