5000mAh portable phone charger is only 4 3/8 ” x 2 1/2 ” x 3/8 ” inch.Compact external battery pack is easy to hold in hand, you can easily put the portable charger in your pocket or handbag. With this 5000 mAh power bank, no worry about running out of battery.The portable usb charger are upgraded built-in smart chip Charging speed increased by 2 times. Dual Charging 5V 2.1A output, fully charge your smart phones in 1.5 times, Galaxy S9 1.2 times. Phone charger battery pack provides you with a more convenient charging experience.Customize the power bank with your company, organization, or school’s name, logo, and/or slogan. What an ingenious way to show off your logo!