1.Two usb output 2.100% compatibility 3.Grade A cell 4.Li-ion battery 5.professional manufacturer Newest double USB portable power bank, mobile phone power bank Specifications1.Product Size: 75×70×22mm 2.Body weight: 140g3.Built-in battery capacity: 4000-5200mAh4.Built-in battery Model: Li-ion battery5. Output voltage: 5V 6. Input : DC5V/1A ; Output2: DC5V/2A USB: 2 port 2.07.Materials: Aluminium ...