The battery actually holds nearly 16-18 hours, depending on the volume that you hear.
Schön is the battery level indicator in the smartphone (iPhone with me 6+) next to the Bluetooth symbol, there you can see the current battery level.
The Bluetooth connection worked without problems immediately, easy to load the Micro supplied USB cable and plug in if you load on your PC, you can simultaneously listen to music when you want to.
On the subject of sound:
I must confess that I'm actually used only headphones, in the case of Pioneer DJ headphones.
This one should in no way compare with it, but the sound is absolutely amazing, the bass are sufficient and the high tones not to exaggerate, a kind of bass boost you can on the right side of the head Höreres ADJUSTING, as well as play / pause / answer / volume and track Skip ,
As for me missing a few specifications, I had the supprt of Creative contacted because I was interested in, what has this frequency response, within 24 hours, I got the following answer:
Dear customer,
Thank you for contacting Creative.
Regarding your last email I can tell you that is the frequency response (Headphone Frequency Response) of the Sound Blaster JAM 20Hz to 20kHz. I hope I could answer your question.
I'm mega happy with the headset and can this friend without hesitation.