... stereo effect. 3.holder function. 1, high-fidelity, high resolution DIGITAL stereo effect. PLL lock-in technology 2. LCD screen displays with ... . cigarette lighter power supply 7, 3.5mm audio input interface for portable CD, MD, MP3, MP4, PDA, PC, IPOD, DVD, etc ... can control the IPOD IPHONE music and its frequency 7 in 1 Car Kit for IPod-iPhone P37