The Bolt Light is a special collaboration between Brian Fellhoelter, Tuff-Writer and FOURSEVENS, with a unique and innovative user-interface. While most flashlights rely on a traditional push-button switch, the Bolt Light uses a sliding bolt mechanism, allowing you to turn the light on and off, or change modes, with an easy and natural swiping motion. Smooth BODY MATERIAL Type-III hard-anodized aircraft-grade aluminum BEZEL MATERIAL Type-III hard-anodized aircraft-grade aluminum LENS MATERIAL Optical-grade glass lens with antireflective coating on both sides. Batteries not included. Excellent condition.