About 887B this charging bank introduction
Output interface: Comes with three USB-A and one USB-C output interface, it can charge four electronic devices at the same time. Among them, USB A1 is a fast charge interface, and USBA2 and A3 output is 5V/2.1A.
Input interface: Micro USB 18W fast charge input interface and USB-C 20W fast charge input interface, with fast charge, charging faster, greatly shorten the charging time.
It only takes 30 minutes to charge the iphone 12 to 70%, and it weighs only 475g, which is very light and easy to carry.