The Tungsten USB can be recharged on the go using a laptop computer or any micro USB cellphone charger.Powered by ASP's custom-made 18650-Lithium Ion battery, the Tungsten USB's latest XPG2 LED light produces a powerful 350 lumens of ultra-white light with a continuous runtime of approximately two hours. The Tungsten USB's battery has a protection circuit module to prevent overcharging or shortcircuiting, and the battery indicator on the light blinks red when charging and turns solid green when fully charged.
The linear form factor of the Tungsten USB makes it easily carried lens up or lens down.
Its built with precision-machined high strength aluminum with a Type 3 matte black, hard coat anodized finish.
It has a 3-position switch (intermittent, locking and constant-on). The center locking position guards against accidental activation.
The Tungsten USB comes with a detachable and reversible pocket clip, a Micro USB to USB retractable cord, a car charger, a wall charger and a zippered travel case.