... 107.9MHz, 0.1MHz/step. 1, high-fidelity, high resolution DIGITAL stereo effect. PLL lock-in ... lighter power supply 7, 3.5mm audio input interface for portable CD, MD, MP3, MP4, PDA, PC, ... power supply or battery charging) 10, transmitter, charger, frame one, use more convenient, more beautiful. ... control the IPOD IPHONE music and its frequency fm transmitter and remote control for iphone 3gs and ipod