Self-sufficient, CCD technology, digital image processing. Four white LED lamp illumination to provide maximum realistic color reproduction. Built-in lens protector designed to prevent dust and scratches to optical components. Lightweight - only 40 grams, ergonomically designed handpiece. Rotates between live and freeze frame images up to 4 channels. Disposable sleeves included to prevent cross contamination. NTSC or PAL available. Universal AC power source (AC100V~240V).