GBTIGER (Power Bank-04) Real 10000mAh Power Bank: With polymer lithium battery and 10000 mAh real capacity, the conversion rate of the battery is at least 85%. enough power for your phone or other devices. Dual USB Ports: (5V 1A and 5V 2.1A) meet more than 99% of electronic products charging requirements. Can charge two devices at the same time. Charge is steady and fast. Smart LED Digital Display: Smart digital screen shows remaining power in digital format and the display is accurate to 1%. LED digital display makes you easily to see how much power your device has and whether the device needs to be charged. Protection Design: Using excellent circuit design and current & voltage control module, prevent your devices from over-charging, over-voltage, over-current, and short circuit. Backup power supply is mainly designed for charging digital products, such as mobile phones, tablet PC, MP3, MP4 and game player etc. 1-Year Quality Guarantee: With Professional Before & After Sales Service; 5.59 x 2.72 x 0.43 Inch cuboid size is like general cell phone, easy to overlap with the phone, easy to carry. It is a great accompany for you when you travel or have an outdoor gathering.