The Stoke is the product of the amazing evolution in LED and rechargeable battery technology. It provides you with incredibly high light output or long-lasting continuous runtime in the same package. The aluminum housing makes it touch and lightweight, and it helps to keep the light cool in spite of the high energy beam it puts out. The adjustable bezel allows you to focus the beam to your needs, making it a spotlight or a floodlight. Best of all, it can use either a high-performance USB rechargeable battery (USB charger is built into the light) or standard single use CR123A batteries. In the past, lights using rechargeable batteries required specialized and often bulky chargers and cables. USB Charge capability allows you to use standard Micro USB cables to plug into the light directly or even directly into the battery to quickly top off your charge with home and car cables/charges that you already have on hand. Rechargeable batteries save money and are capable of higher light output, but are susceptible to power drain while not in use and are not always practical for use in the field. Dual Fuel is a design concept that allows lights to run off of rechargeable or standard single use batteries, increasing the capability of your lights and giving you the best of both worlds. Small hand-held LED flashlight, spot to flood bezel adjustment, rugged aluminum body, dual fuel (uses USB rechargeable or single use batteries).