BACKPACK Portable UV Clean Sanitizer Bag Fast Germ Sanitizer Kills of Bacteria Viruses

Instructions: This product starts to work when placing the zipper puller on magnetic button at the side, and connect to power or power bank, then sterilize you stuffs within 3 min and automatically shutdown. And theres a small transparent window with LED light on the side of the backpack, you can see the circuit board through it, the light will be on that let you know it is working.