Main features: 10000mah large capacity more durable and optimises charging efficiency, offer constant power dual usb input and output two usb ports, which can charge the devices at the same time, the usb-c and micro usb provide two charging ways, convenient and fast power input 5v 2.1a power input, deliver fast and efficient charging for each connected device. High-density lithium polymer batteries adopts premium lithium polymer battery cells. It's compatible with smartphones and tablets as well as a variety of digital cameras and handheld gaming devices. Battery type: lithium ion polymer battery battery power: 37wh 3.7v 10000mah rated capacity: 5599mah (5.1v/2.6a) product dimension: 150.5*73.6*15.1mm input interface: micro-usb/ usb-c output interface: 2*usb-a input data: (micro-usb/usb-c) 5v-2a output data: (usb-a single output)