This product is much more relaxibale power genarate machine.its power bank are perfectly price of the product in compatitive market its also help the human life.its through any mobaile phone charging prosess and easy to own place to anouther place carry this product .sony brand a power full brand in the market demand it also some outher brand to diffarence power genarate brand .its conduct are comfortble user its product are long lasting batrry service.sony coustomet care anything problem help this product.