The box is really good. The UE mini boom box I had first, it was me in the slightest, but volume too loud. Listen at your desk and focus here is hardly possible. Now to the Sony box: The battery lasts me in operating the Box nearly seven hours. The sound as well as the free establishment Pech work very well. My counterpart was able to well understand the calls. The connection of the box with Bluetooth works flawlessly. After some time of inactivity, the box automatically switches to standby (Standby approx 19Tage, season ca.7Stunden !!). When the Bluetooth (eg mobile phone), the box automatically reconnected. The box is very handy, well made and looks dibasic. Strong buy recommendation. Those who love the very large volume, for the would ue mini boom box an alternative. However, I have decided on the Sony box. Collect them better.