PDW BYOB Light. Features: The Bring Your Own Battery headlight is a unique and versatile light, designed for everything from commuting to adventuring Plugs into the standard USB-A port on any portable power bank, which means you can choose the size and capacity of the power bank and easily swap in a fresh power bank on the fly Light can be permanently mounted to handlebars or fork crown on bike since removal for charging is not needed Power bank sold separately Specs: Model:BYOB headlight Run Time:up to 16 hrs with 10k/20k mAh power bank Color:black Weight:-