This black Onkyo RC-682M remote control runs an Onkyo home theatre audio receiver / sound system.
This RC-682M Onkyo remote control has buttons for listening mode, setup, return, audio, muting, previous menu, subtitle, random, repeat, vcr, dvd, tape, tuner, radio, cable, satellite, game, auxiliary, CD player, and hdd.
A serial number similar to this number: UR77EC3303-2 may also be found in the battery compartment.
