The Sony Radio Cassette-Corder is a four-track cassette player, two-track cassette player/recorder, and TV/weather band/AM/FM radio designed for use byindividuals who are blind or have low vision. The unit features variable speed control, built-in speakers, and an FM/TV telescopic antenna. The unit does not erase four track cassettes. POWER: Uses four D batteries or alternating current (AC); batteries and a power cord are included. DIMENSIONS (HxLxW): 5 x 10.75 x 6 inches. WEIGHT: 3 pounds 6 ounces.