I had purchased the powerbank from flipkart big billion days which costed me less I think this product is awsome and easy to use btw its has its own pros and cons
Pros: -
1: -Value to money
2: -easy to use user friendly.
3: - Enough for charging battery of 3800-4000 mah two times when full charged.
4; -Charges it self fastly
Cons: - as every thing has its own pros and cons this product also have.
1- dont give you whole 10000 mah some is wasted.
2: - Dosnt support all device fast charging.
3: - life span for regular use is 1-1.5 years.
Whereas good product easy to use and carry and best for travelling and has a light weight.
Includes a torch too which is enough to search accessories from your bag.
In this price range I am satisfied with this product.