I used the clock radio in the office to charge my iPhone 4 or listening to music on the radio or the iPhone. Our office building is very well shielded. Still, I had a very good reception. As other devices from JBL and Sony have "painted sail" the.
Now we come to the negative side. For a week now my iPhone has a 4 Bumper (Cover) by Apple. Unfortunately, the dock does not work anymore, now that the bumper for the small cutout is too thick. I was in a large electronics market and have tried my iPhone + Car with different devices. Unfortunately, I realized that this clock radio is the only has this problem.
Conclusion:
Who is looking for a compact unit with good sound and good reception, you should buy this device. Who operates his iPhone with a bumper but should keep away from this unit.