I've tried the device earlier and am now quite disappointed because as an adapter, I have always been looking for in vain.
The coupling to the iPhone worked after a few tries.
Then the device will always be detected when the docking station is on.
Music is transferred without delay and the range of 10m also true.
Basically, everything works as it should. The Docking Station is recognized as compatible speaker! Perfect.
However, the sound quality is so bad and unacceptable that you can not compare it to a cable or direct connection!
You hear different noises (cracking & scratching), the transmission is relatively quiet, the bass is too weak and the highs are not the real thing.
The price 37-41 is pretty crass. For this money I would have expected more, because in my car works perfectly with Bluetooth streaming my JVC KD-R921BTE and this with a simple Bluetooth adapter that attaches JVC.
No buy recommendation for people who hope to clear sound quality.
For those who do not care: Accesses quiet because there is nothing by technology.