I bought this product about 2 months ago and I have been using this daily.
In this two months of usage I have observed many pros and cons on this device and here is the list of the pros and cons which I have observed.
Pros
Very good and attractive design. I give a 5 for its looks.
It's very light and we can carry it very easily when we are travelling.
It's it comes at a very cheaper price at 900 rupees nearly.
Cons
After one month of usage the powerbank slightly slowed down I mean my phone usually takes 2 hours of charging but now it's taking like 3 hours of charging if I use this power Bank.
It claims that it has 10, 000 mah battery but I think it's a bit less than that because I can charge my phone which is a 4000 mah only twice.
Even the power bank takes a lot of time to get fully charged.
Verdict:
I think there are a lot of products which are better than this one so I will suggest that you go for a better one.