At first I was skeptical whether Bluetooth enables good sound, now I have to say I find it very good. Can not tell the difference when the headphones are plugged in directly on the laptop. It is handy that you can plug in any 3.5mm jack. Have it tested (with microphone headset) with the normal 3 pin plug and 4 Poligen. One can sometimes hang the stereo, and sitting with the laptop on the couch. The battery lasts really long time. At high volume, I would estimate that he holds so 4-5h. At the stereo he is but sucked dry quickly. It is positive that one can during the listeners also charge (which can not). The capacity of the battery I have been measured, the 110mAh given agree quite well. Unfortunately, the supplied headphones fit me not so good. The sound quality is my opinion quite good, but it would be even better.
Conclusion: Real Super, can be dropped very universal. Price performance is just awesome. For even better sound easy to use high-quality headphones.