I now have the good B-Speech Bluetooth Rx2 deliver stereo receiver for a week in use and a relatively objective review.
The purpose of my receiver is limited only on the car. The device is operated with a Nexus 4 and appended to an audio input.
Reaches ~ 5h are as indicated - + adequate maturities
+ Very compact - device is really small!
+ Range - can be used throughout the car, even when the phone is located outside the vehicle
+ Device can be loaded and used at the same time
+ The power turns off automatically if no telephone etc. connected
o functions as a remote control rather minimal
o instruction is kept very short
o The processing by the device (clearances etc) according to the price
o The sound quality is sufficient - for audiophiles is anyway recommended the cable
- The device has in particular a loose connection cables (works on PC super but with the audio cable in the car, there are sometimes problems, which also occur only with the adapter It is a high-quality cable ...!)
- IMPORTANT! The device does not provide Micro USB port for charging like a normal phone but a mini USB port. Of course you can wire the cable to the car charger, but you have to change just always!
Conclusion: For the low price we can perhaps no longer be expected, but the Micro USB connection really sucks something of that I really have to deduct 2 stars here. I hope there is a successor of the 10 will cost more, but it has mini USB, slightly larger battery and improved clinker connection.