Mercedes Benz Mercedes-Benz E-Class (W211) Genuine Optional HDD Navigation System

We purchased this item after being told it was used in a late-model Mercedes-Benz E-Class (W211). Part numbers: M203 825 60 00 M169 825 62 00. The unit itself is made by Clarion. Accessories: Power cable, GPS, and sensor cable only. DVD video playback and music recording function included. We don't know the exact year of manufacture, but we believe it's quite old. We confirmed that it powers on and reads DVDs, but we haven't checked all the detailed functions. It's a bargain, so no claims will be accepted under any circumstances!