I am genuinely surprised, the sound quality is good with pleasant bass and a good sound spectrum that is not better in wired InOhrsteckern at this price.
With silicone plugs and clam holder you have to experiment a bit, I have half an hour hand until I have the perfect combination for me found. The listeners are sitting firmly in the ear without being disagreeable.
The battery charge is sufficient for about 8 hours or about one working day.
I give 4 stars. For the price you can not really go wrong.