The SPARCA(R) SOLAR harnesses the power of the sun for up to 150,000 hours of battery life. Auto D-TEC technology automatically switches from solar to battery power when the sun can't power the dot to your choice of 10 daytime illumination settings and two night-vision compatible settings. Its daylight bright, 2 MOA dot delivers a clear, precise point of aim, and is motion activation capable for worry-free activation in high stress situations. Features Daylight Bright Illuminated Center Dot - Daylight bright, illuminated center dot aids in faster center-point acquisition in bright daylight conditions. Fully Multi-Coated - Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces. Unlimited Eye Relief - Non-critical eye relief for rapid target acquisition Night-Vision Compatibility - The lowest 2 settings are night-vision compatible. Parallax Free - All red dot and holographic sights will exhibit some small amount of parallax. Matching current industry practice, this small amount would be considered "parallax free" and will make a negligible difference in performance. Waterproof - O-ring seals prevent moisture, dust and debris from penetrating for reliable performance in all environments. Shockproof - Rugged construction withstands recoil and impact. Fogproof - Designed to withstand a wide range of temperatures. Low-Glare Matte Black Anodized - Corrosion and wear resistant anodization provides low-glare matte surface and helps camouflage the shooter's position. Single-Piece Chassis - Compact and lightweight. Solar Powered, With Auto D-TEC Technology - Automatically switches from solar to battery power. Motion Activation Capable - Automatically activates with motion after auto shut-off Daylight Bright Red Dot - The daylight bright 2 MOA dot is fast and easy to use. Choose among ten variable illumination settings - the lowest two settings are night-vision compatible. Included in the Box Tethered Lens Covers T10 Torx Multi-Tool Low Mount Lower 1/3 Co-Witness Mount Lens Cloth CR2032 Battery Specifications Dot Color - Bright Red Dot Size - 2 MOA Eye Relief - Unlimited Adjustment Graduation - 1 MOA Travel Per Rotation - 42 MOA Max Elevation Adjustment - 100 MOA Max Windage Adjustment - 100 MOA Parallax Setting - Parallax Free Length - 2.6 inches Weight - 5.9 oz