I have buyed this product from Flipkart it delivered very quick like this power bank which charge my phone very quick . The power bank provides 2.1 A output which really good . The power charge itself taking 7 hours making completly . This powerbank is easy to carry I carry this everywhere where I go . This charge my phone of 3045 mah 3 times completly . I have buyed this phone in special sale so it is value for money for me . I am using this from 2 months and it satisfied me completely. I recommend this powerbank to user with 4000 mah phones . The look of this powerbank is awesome . I love the pink and brown variant of it. I have a brown color of it. My friends are using this powerbank for more than 1 years and didn't have any complaint. The torch light present on this powerbank which is 180 rotated and it is very bright enough . I use this when their is power loss.