The build quality is top. The sound in the price range of the Hammer. Device via Bluetooth easy.
Why I forgive only 2 stars: The extremely loud and insistent message of the box. When you switch shares with a very loud voice, as the box is currently connected. Whether Bluetooth or jack. The announcement can not be switched off also. It is not subtle, but really really loud and pushy. What have been thinking the developers is a mystery to me. The box also starts to drool when the battery is running low, every 30 sec. then comes the request to charge the battery. The box does not have enough juice to the 30 min. to make long. At the same volume. So if you have forgotten to turn off the speaker and he is not dependent on the power grid, then it echoes in advance by 3 clock in the morning through closed doors.
No buy recommendation.