10000mah Huge Capacity: -- External battery pack offers about 3.5 charges for iPhone 8, 2.4 charges for iPhone X/10, 2.5 charges for galaxy S8/S9. 3 in 1 qi power bank, supporting charge up to 3 devices simultaneously. Special Security Structure Patent: -- Built-in safety cooling board to fasten the PCB board and control the temperature in normal condition. Aluminum Shell looks more elegant, modern and fashion. Bidirectional Type-C: -- USB-C port (input or output), it can quickly charge device or recharge itself with the maximum current up to 5V/3A, USB-C to USB-C cable is included in package. Widely Compatible: -- Available for all Qi-enable cellphones, such as iPhone10/X, 8, 8 plus, Samsung Galaxy S9, S9+, S8+, S8/S7/S6, S7 edge, Note 7/8, Google Nexus 6,and other Wireless charging devices. The other USB ports support almost Apple and Android devices.