Serial No: 10702241 Check OK Body Power wire CD tuner Scratches Dirty CD receiver compatible with CD-R / RW playback for audio with rust Upgraded version (dB equalizer) that can correct sound quality of 6 patterns 3-band (tone control) Combined with the (Speaker Selector) that can select the optimal equalizing according to the installed speakers. Fine tone adjustment is possible Not only the sound quality matched to the characteristics of the car Supports a wide range of user-preferred sound quality Equipped with 1 rear pre-out Built-in 45W × 4ch ultra high power amplifier 1 month warranty for peace of mind