Just go out and bring a model that suits you. The charging cable makes charging and torage more convenient. And widely compatible various digital products. Rated energy: 37Wh/3.7V Input port: 5v=2A(Android)/5v= 1A(iPhone)/5v=2A(Type-c) Output port: 5V/2.1A; 5V2.1A Product size: 80*80*20mm Product color: pink / red / white / navy