TUOFENG Tactical RED dot sight sighting system Red and Green Illumination 4 Separate Reticle 5 Brightness Settings Red Dot Tubeless Open Reflex Design Sight with Weaver-Picatinny Rail Base Mount 5 Brightness Settings. Tubeless Design. 1x Magnification. 4 Different Reticle Designs for every Tactical Solution. Ball and Bearing Windage/Elevation adjustment for precision and superior shock resistant Weaver-Picatinny Rail Base Mount. Thermoplastic Lens Cover Included. Battery Included Objective (mm)-23x33. Unlimited Eye Relief. Multi-Coated Lens. Black Finish. Windage & Elevation Adjustments. Weight-4.2oz. Length-3.25". Wide Sharp Field of View.