Positives: The voice quality is impeccable in both directions. In highway driving one must speak a little louder, but that's to be expected at this noise level. Otherwise, there is nothing for me to complain. Negatives: Two Star deduction for the battery. Holds less than half as long as claimed by the manufacturer. From for up to 40 hours standby. The first time, I still thought it was my fault, I should have the battery may not adequately charged. Then it happened again, early battery nearly empty, which the device with occasional beep (bearable) announces. One should not rely on the good piece and charge regularly. Or have the supplied charger cable for the cigarette lighter there. Conclusion: In principle, highly recommended, with slightly weak battery capacity must come to terms.
