Samsung EB-P3400XU (often styled as EB-P3400) is a popular 10,000mAh power bank featuring 25W Super Fast Charging, two USB-C ports for simultaneous charging, and a design made with recycled materials, providing a quick power boost for phones, tablets, and earbuds with support for PD 3.0/PPS, though fast charging only works with one device at a time, delivering about 1-1.5 full phone charges.