The once adjusted volume remained switched off and on. The announcements remain at the set level will get!
After inserting a 16GB Kingston Mini SDHC MP3 audio files are played immediately. The title can be "fast forward" through quick succession 2-pressing the + button or the - "Rewind" button.
The phonetic / Quiet setting works as less problematic than in other boxes in which the title advance takes place over a short confirmation of the volume button; small volume changes can thereby be implemented only with difficulty.
The handsfree function worked quite well until the legal quietly playing the caller, you have to go very close to the box so, so you will be well understood. The caller himself can understand about the box but good. When incoming call, the phone number is read (in English), which is a bit time consuming, but the aria can be shortened by pressing the call answering key.
The sound is taking into account the size and the prices impressively well. A 35 square meter room can be easily sonication in good volume, compared to a stereo with large boxes is of course not realistic.
Meanwhile I run the box sporadically for 5 weeks without having to download malfunctions and without the battery. I would buy the box again and can recommend it with a clear conscience.