Overview: High fidelity, stereo, digital PLLLCD display Output:88.1-107.9 M Hz, 0.1 M Hz/ Step Small electric current, power supplied by 3GS/4 G With car charger, and it can be charged by 3GS/4 G Compatible: All 3GS/4G (including Nano G3 amp; Calssic), except 3GS/4G