I don't know what one I got, but I got the specs right here:
- DC IN: 5.0 V - 800 mA
- DC OUT: 5.0 V - 1000 mA
- CAPACITY: 2600 mAh
It's definetly nothing compared to what others have, but it's about as big as a finger, so it doesn't fill up a lot of space. I can easily carry it everywhere, I sometimes even forget that I brought it along with me.
It was also really cheap, only €7,99, so say 10 bucks? That's hardly any cash, and it charges more than enough if a fully charged phone doesn't last long enough on a single day, before needing to charge it again at night.
Like I said: Not the best, but good enough for me.