Our mobile power bank provides a total power up to 74W/20000mAh and 4 remaining power indicators of power bank battery, dual USB charging ports with 3.1A total output enables you to rapidly charge 2 devices simultaneously（5V/2.1A & 5V/1A）, such as phones and tablet PC. Advanced circuit and high efficiency power management to protect your electronic devices from over-current and short-circuit. Ultra-slim size with LED flashlight is portable and optimal for travelling and working. *RELIABLE DUAL C