This gray aiwa RC-TN520EX replacement remote control is for a receiver audio system that operates tape deck player, fm am radio tuner, video/auxillary, and cd player. There are buttons for timer, sleep, fm mode, clock, random, repeat, dsp, edit/remain, prgm, open and close, disc direct play, disc skip, bbe, t-bass, geq, direction, preset, down, up, rec/mute, clear, and set.
This was also sold internationally (in addition to the US) in countries such as the UK and Germany.