High efficiency built-in 10000mAh lithium polymer battery, to charge your phone 2 to 3 times. 2 outputs, quick charge, 18W Max power, two USB outputs (regular USB and USB Type C) to charge two devices simultaneously. Support Qualcomm Quick Charge QC3.0 at USB A (regular USB) output with 5V/3a or 9V/2a, 18W max power. Support 5V/3a 15W max power at USB-C (Type C) Output. Quick refill both micro USB or USB-C, refill time can be as fast as 3 hours to full capacity. Micro USB supports 5V/2a or 9V/2a 18W max, and USB-C supports 5V/2a 10W when used as refill input. 0.4 inch slim design, sleek surface and handheld size of 6. 2 x 3.0 inch makes it convenient to carry. Over charge, over current and over voltage protection ensures safety use. Gigastone is a global brand of mobile accessory products, selling multiple millions of units worldwide each year. Office is located in Irvine, CA and also worldwide branches are setup in Japan, China, Taiwan.