Why only 3 stars?
1. A German manual is for some certainly helpful and should be also entitled to expect with me but only two short instructions in English were there!
2. There are no fastening material, or even supports, no eyelets or holes to fix and secure, neither the controller nor for the Bluetooth adapter! (I have my self Velcro to attach worried.) Expansion hooks were despite description here not there and probably not included in the delivery!
For a purchase price of about 80, - Euro I think that improvement, otherwise the whole but still a good and recommendable product!
One more note: I had this item is sold 2 x order, because to me a false and not suitable adapter was sent the first time, the second time I have but then the right and get it all worked out!