The included battery charges inside the flashlight, using the supplied cord and adapters, or any micro USB phone/electronics charging cord―no separate battery charger needed. The Tungsten is machined from 6061 T6 aerospace aluminum, type III hard coat anodized in a proprietary matte black finish. Premium components include Cree XPG LED, gold-plated connectors, polished aluminum reflector and optical glass lens. In keeping with our emphasis on intuitive design and simplicity in our law enforcement tools and training, activation of the Tungsten is via a single pressure switch on the tail cap. A 3-position twist selector allows choice of intermittent, constant-on, or locked.