*Super electronic anti-shock function. *Built-in double tracks stereo speakers *with optical fiber output function can be connected 5.1 channel *Zoom of picture function. *Full TV systerm: PAL/NTSC. *Built-in lithium rechargeable battery and using inside the unit. *Power adaptor(AC INPUT:110V-240V;DC OUTPUT: 9V ) *unit size: 145*145*30mm .