Description of Princeton Tec Genesis Quantum Designed for tactical applications, the Genesis uses a regulated 3 Watt Maxbright LED, and has a momentary/constant on switch. The Genesis features a combination of a bright 3 watt Luxeon LED and a sophisticated lens system. This latest lens technology efficiently gathers all of the available photons from the LED and projects them forward, providing up to 47 Lumens of light output. The Genesis has an elastomer covered handle which ensures a firm grip and durability. Powered by 2- CR123 lithium batteries, the Genesis is current controlled to provide constant output and the tail cap switch offers momentary and constant power. Waterproof to 1 meter, this workhorse has a burn time of 1.75 hours of constant light output and 20 hours of total light output. Includes; holster, lanyard ring, roll-control ring, belt clip, and red, green and blue lens filters. Features: 20 Hour burn time Beam length up to 76 meters, narrow beam Heatsink Technology - Princeton Tec has developed proprietary ultralight heatsinks to protect LED products from overheating. Even though LEDs operate at much lower temperatures than traditional incandescent bulbs, they still generate heat. If this heat is not dissipated, the LED will suffer irreversible damage. By using heatsinks, Princeton Tec lights can burn at extreme brightness levels for long periods of time. The heatsink may be incorporated internally or externally depending on the product and its application. Regulated LED/Constant Brightness - Princeton Tec lights that feature regulated LEDs have a sophisticated regulating circuit that maintains initial brightness as long as the batteries have sufficient voltage. Traditional lights are very bright initially, but immediately begin to dim and continue to dim until the batteries are drained. Constant Brightness is a term used to describe products that have regulated LEDs. Focused Narrow Beams - This pattern creates a long, powerful beam of light excellent for illuminating distant areas. The resulting long-throw spotlight is especially well-suited for night hiking and search and rescue. Waterproof Rating Level 2 - Princeton Tec’s intermediate rating, Level 2, is assigned to lights that offer a degree of water protection equivalent to IPX7 in the International Electrotechnical Commission (IEC) standards. Lights rated at Level 2 provide waterproof integrity down to 1 meter for up to 30 minutes. Maxbright LED - The highest quality LED available from Lumileds, Princeton Tec’s Maxbright LED is extremely bright and efficient. This single LED emits a smooth, powerful, white light useful for a wide range of tasks. Princeton Tec uses collimators or reflectors with the Maxbright LED depending upon the application. The Maxbright is offered in one- and three-watt power configurations and advances continue to be made. LED Optic Collimator - A collimator gathers all available light from an LED in the form of scattered rays and re-emits the light as parallel rays, making it more optically efficient than a standard reflector. Princeton Tec calibrates each collimator to the type of LED and application of each light. With proprietary optimized collimator/lens systems, Princeton Tec continues to advance LED technology.