Features: - Practical to use and easy to install. - Mount on any 20mm weaver standard rail. - Full metal casting scope housing objective. - With 2 levels dot brightness control on each illuminate color. - Brightness of the reticle can be controlled by a brightness setting dial. - Anti reflection device included to eliminate potentially compromising reflections from the objective. - Lens diameter: 32mm - Length: 135 mm - Dot color: Red and green - Body construction: Anodized aluminum - Power by: 3 x AG13 battery (not include) Maintenance methods: - Please wipe the lens with a clean flannel cloth to keep it clean and dry in order to avoid scratching the glass. - Please store the scope in a dry place when not in use. - Do not attempt to lubricate any part of the scope. - Any further information, please see the user manual. Color: Black Package weight: 0.519 kg Package size (L x W x H): 17.00 x 7.50 x 8.50 cm / 6.69 x 2.95 x 3.35 inches Package Contents: 1 x M2 Sighting Telescope, 2 x Flip-up Lens Cover, 1 x Allen Key, 1 x Cleaning Cloth, 1 x English User Manual