The bag is super processed, looks good and absolutely served its purpose. If you take it in the hand feels very pleasant and the Q10 does not shake it. Even the lining is very good because it protects the phone from scratches. Next I think it's great that you can see the status LED, even if the phone is in your pocket.
The bag is to extend the term (by Power Save function) indeed, here I have a feeling that's true this.
The USB port is hidden in full eingschobenen phone in your pocket, what disturbs many, as the mobile phone during charging can not remain completely in the bag. What bothers me is not really, because I basically take the phone out of his pocket while loading.
Conclusion: A good product that I can recommend.