Never let your device run out of charge with this Kopplen Digital Display Dual USB power bank. This palm sized device features 20, 000mAh battery capacity that makes it ideal for travel. Clear LCD digital display lets you know the power level, so you will quickly know when the power bank needs to be charged without any guesswork. | Kopplen Digital Display 20000 mAh 22.5W Fast Charging USB Power Bank - Black