I can not understand how this could get in ears so good reviews ...

For processing:
The headphones are not particularly well made in my opinion. The ear parts are only made of plastic and you can see a glued seam next to Ansteckplatz for silicone cushion and feel.
The build quality is not what bothers me so (going immediately afterwards received).

Sound:
The sound seems relatively balanced. The average heights not covered uncomfortable as with other ears in this price range.
The upper levels are even relatively crisp, perhaps a little excessive to 12kHz.
But what of this bluetooth in ears so bothers me: the volume!
So either my hearing has deteriorated a 90-year-old in recent days to the level or these parts are actually quite quiet.
In addition, the bass is anything but powerful and really low frequencies beyond 80Hz One looks in vain, too bad! Especially since my phone via Bluetooth not the bass boost function support, which I otherwise like to use.

Fit:
I had got myself into these ears for sports in the gym. This application it will definitely meet because it really good and fit snugly and are very light, which is why the manufacturer also probably decided this headset has completely be made of thin plastic and therefore to renounce good feel and workmanship.

Other:
The pairing with my phone (Galaxy S5) went quickly after I had noticed that the headphones have really damn close on mobile phone lying, so they can be connected via Bluetooth.
The range is as the manufacturer promises.
However, I have now found a few hours later that here and there in the music playback stuttering occur, which is extremely annoying.

Conclusion:
Who affordable bluetooth examined in ears who just sit well in sports and can it do without good and sufficient, above all loud sound is well served by MPOW Seal bluetooth headphones.
I've probably just expecting too much for the price and am admittedly a little disappointed they'll likely return again.
The price / performance ratio but in any case.

UPDATE:
After I had the headphones longer in use I noticed that the volume control has nothing to do on the headset with the mobile phone.
One can after you've turned up the volume on the mobile phone, the headset volume increase again.
Thus I get the volume to my desired level.
Therefore I've added 4 stars, instead. 3