Pros:　
-Has a switch on the bottom to turn on charging on and off
-Comes in black or white
-Can charge the case AND the iPhone at the same time
-With 2350mAh it charges my iPhone 4S from 10% to 80% which is almost double the battery life..
-Covers the back of the phone and the back of it looks really nice

Cons:　
-Couldn't choose which colour to get, but that's my fault, i didn't mention it in the comments when purchasing.
-Pretty bulky and big, but worth it.
-There's a shiny part and a matte part, people with the white cases beware as that particular part gets dirty easily! Wash with a slightly damp cloth
-Doesn't cover the front of the iPhone, but I knew that when I bought it

Other Thoughts or Suggestions:
Overall it is a great accessory to have especially for those with iPhone 4S's as they are known to have a bad battery life!

Pros:　
Feedback was good, easy to use , convenient and good quality product

Cons:　
no

Other Thoughts or Suggestions:
Will intro to my customer to buy

Pros:　
good

Cons:　
good