Great sound, function surprisingly, not for big heads

Once unpacked it can immediately go.
Packaging is cleaned up - it's just a micro-USB cable here - no charger. The headset can also be loaded on each Micro-USB charger or USB charging adapter. Not yet an unnecessary device.
The operating instructions in German and short and understandable.
The instrument-making a rather robust impression and is not "feather" - for trust awakening. I think it's a good thing.
Unfortunately, "only" Bluetooth 3.0.

The connection with a variety of devices works fine. The pairing is quickly activated (press the button until the voice says: Pairing). The device connects to the last connected devices automatically (yes - more than one device - it can hold up to 2 active compounds - is nowhere)! Very surprising and great - but my computer is brought to malfunction, because Windows will find the headset not properly as a headset, but as speakers and various other devices ... and with 2 active connections Windows wanted to do something else / establish connections (you have only know times). So take care, that only one Bluetooth device is on, if the PC is to be used ... At the same time 2 phones headset also does not know what it is to give priority to (tested with Windows Phone 8.1 and BlackBerry OS10).
Interruptions or disturbances I had been barely. It may be that short interruptions in music pieces are. What exactly is, however, I could not even identify. Unless the connected devices were employed or had technical problems.

The sound is overwhelming - over all other headphones that I had previously. And that for the price.
A full sound, both good highs, midtones, and only the bass. The equalizer was deactivated again - was no longer needed. With various pieces of music I've only just taken the details right. And now and then looked around and searched the polluter - as real were the sounds.
However, on Windows PC via integrated Bluetooth rather reverberant, grottig and not nice. But is more likely at the PC - for a variety of mobile phones, the TV and stereo system, the sound is simply huge.
It is still being tested, whether on a PC, a Bluetooth transponder sounds different (here I can recommend: TEC.BEAN Bluetooth Aux 3.5mm Stereo Music Transmitter & Receiver Transmitter - 2 in 1) ...

Appearances and 10 hours of music enjoyment. The realistic. I have the headset almost 2 full days use without charge - naturally fairly quiet volume. The quietest level is sufficient for most songs. According also goes - but can hurt;)
When I listen to medium volume, listen to my surroundings quiet sound - because that is really bulky. Who cares, who should purchase headphones with giant clams or weak sound.
Nachgeladen is the headset within 2 hours (with 1A load device). Also during the charge it can be fully used extensively - if the cable goes :)

As I head size M / L, it is - for really big heads probably nothing, because the headset is probably too small.
The earcups not envelop the ears and push something after some time. The headset but not for this contributes to so. Somewhat uncomfortable it if you wear glasses. Here to find the right position, can be distracting.
The seat is tight on the head and, after several hours it can push something. However, the handset also hold, if you have to run after the train times. So - even jogging and physical activities are possible - although not really intended.
For smaller heads can differ slightly.
And the head or ear pain - as with other headsets - I did not.

The operation is used to - sometimes not very clear. Unfortunately, the buttons are missing orientation marks. But overall okay and sufficient. I came to a few minutes practicing handle it.
Also, you can not fold the headset - so you can pinch anything and there is no predetermined breaking points for connections and cables. Also no hinges can wear out. However, during transport is required so little extra space when it is not on the head)

The headset can also be used perfectly to make phone calls. Both the PC and especially well with mobile phone.
The interlocutors were surprised when they learned that there was a headset and that the micro is in the housing.
So - all in all - great product. Let's see how it looks after 2-4 weeks :)

Conclusion:
Can only recommend the product!