LONG BATTERY LIFE: Features include Holosun's Super LED with up to 50k hours battery life. This is the perfect optic sight to carry on long treks. ADVANCED TECHNOLOGY: There are 12 different brightness settings, including dim settings compatible with night-vision devices for nighttime use.Parallax free optical design, with unlimited eye relief. SHAKE AWAKE: Holosun's Shake Awake Technology shuts the LED off during periods of motionlessness. The amount of time it takes for the LED to deactivate (enter Sleep Mode) is user programmable. Holosun optics with Solar Failsafe feature automatic brightness adjustment; when you're under the sun you have a bright reticle, when you move indoors it will automatically dim down to match. This item is in the category "Sporting Goods\Hunting\Scopes, Optics & Lasers\Red Dot & Laser". The seller is "jbtoolsales02" and is located in this country: US. This item can be shipped to United States.