You can easily slips it into any of your pockets or bags. 40,000mAh Full capacity of power charges most phones over 5 times, tablets at least 3 times and any other USB device multiple times. Built-in safeguards protect your devices against excessive current, overheating, and overcharging. Suitable for charge most of digital devices, such as smartphones, tablets and other USB-powered devices. Dual charging port with Fast-Charging technology charges two devices at the same time - without sacrificing charging speed. Surge protection, short circuit prevention and more advanced safety features keep you and your devices safe. Built-in L-E-D Display exactly shows remaining capacity in digital format. See how much charging power is left at a glance. FAST