What stereo unit have I got?

Odd question perhaps but...

Disco II, '02 plate. Has Becker unit fitted...but when it powers up it says Becker not LandRover. It has sat nav, which appears to work and all the steering wheel controls work. Written on the front face is 'Navisys'.

Have I got some sort of aftermarket thing? It seems to work OK, just not be quite standard!

I have searched here for other threads but with no luck.

Mike

becker are aftermarket units and quite expensive 2 , you can adapt the steering controlls to preety much any stereo with the correct leads