I bought this device around 8 months back. The colour of my power bank is gun metal which looks great. It’s slimmer than most of the power banks I have seen and used. This feature of its enable it for a easy hold and you even keep it in your pocket. Feels like have having two device. Coming on to its battery life you can charge a 3000 mah device three times once its fully charged. It takes around 6 ( six) hours to charge. The charging speed normal. If you are expecting a fast charging device then I am sorry you won’t be experiencing it with this. Although the price is a bit high but considering it’s design and battery life it’s quite worth it. But I have experienced mi power bank better than this one as it has a fast charging option but provided your device supports this function.