... , high resolution DIGITAL stereo effect. 3.holder function. 1, high-fidelity, high resolution DIGITAL stereo ... effect. PLL lock-in technology 2. LCD screen displays with the tuning frequency more intuitive 3 ... MP4, PDA, PC, IPOD, DVD, etc, any player 8 with the IPOD and 3.5 audio plugs 9, ... control; you can control the IPOD IPHONE music and its frequency