so it's an older X50 (circa 2006?) with the S7 horn which has greater "off axis" detection than the newer M4's. might be something someone would be interested in if they lived in a hilly,curvy area. There are some enthusiasts who might be willing to fork over some green for a detector that is not made anymore and is fairly rare.
Either way good price for a solid detector that has had recent service. *thumbs up*
Active Autowerke Stage 2 tune/BMW Performance Exhaust/ Countermeasure enthusiast.