This product is an amazing product with an effective price. I think it is better in comparison to MI or other samsung powerbank. The battery capacity is good and you can use it for 4 to 5days after once it was fully charged. It has two ports for charge output and also two ports for charge input. It can charge a phone with 3000mAh battery 3times or more. It is a little bit more heavier than other. After all there should be a little bit improvement should be done in its design. It is a good made in India product from Haryana. 1500mAh powerbank costs only Rs999only. It is wonderful powerbank at good price and good battery capacity.