The Anker PowerCore 5000 5000mAh Power Bank Model: A1109 is a high-quality power bank designed to keep your devices powered up on-the-go. With a sleek black design and a voltage of 5V, it is compatible with a wide range of brands including Apple and Samsung. The compact size and USB connectivity make it easy to use and convenient for travel. The single port allows for efficient charging, and the 5000mAh capacity ensures that you can keep your devices charged for extended periods of time.