Ballista Reflex Red Dot Sight 1x30mm. 18in (30mm) objective diameter lens allows for a clear field of view as wide as 57 at 100 yards. The Quick Adjustment Knob can help you instantly adjust shooting accuracy and improve efficiency so you never have to worry about forgetting to bring adjustment tools. The red dot is equipped with flip-open lens covers to protect the optics and allow you to quickly start using the scope. Replacing the battery is quick and easy and it lasts for thousands of hours. Theres a built-in mount for 20mm Picatinny/Weaver and 11mm Dovetail rails. Dual specification rail: need to reverse the rail mount to adjust the special base fastened by 2 screws. The red or green illuminated dot with 5-level brightness control allows use in any lighting conditions. The sights lens is sealed with O-rings to prevent moisture or dust from getting inside and fogging the optic. The body is made from a high grade aluminum alloy. Works great in all weather conditions. Specifications for Ballista 1x30mm Reflex Red Dot Sight: Manufacturer: Ballista Magnification: 1 x Objective Lens Diameter: 30 mm Illumination Color: Green Red Battery Type: Lithium Metal CR2032 Gun Rail: Weaver Dovetail Picatinny Brightness Settings: 5 Water Resistance Level: Waterproof Fabric/Material: Aluminum Alloy Fogproof: Yes Features of Ballista 1x30mm Reflex Red Dot Sight 1.18in (30mm) objective diameter lens allows you to have a clear field of view as wide as 57 at 100 yards. Windage and Elevation Adjustment - The Quick Adjustment Knob can help you quickly adjust shooting accuracy and improve efficiency so you never have to worry about forgetting to bring adjustment tools Flip-open lens covers - Allows to protect the optics and quickly start using The battery is easy and quick to replace and lasts for thousands of hours. Built-in mount for 20mm Picatinny/Weaver and 11mm Dovetail rails. Dual specification rail - Need to reverse the rail mount to adjust the with a special base fastened by 2 screws The lens of the sight is sealed with O-rings to prevent moisture or dust from getting inside and fogging the optic. The body is made from high grade aluminum alloy. Works great in all weather conditions Package Contents: Ballista 1x30mm Reflex Red Dot Sight 2x Lens Covers 1x Cleaning Cloth 1x Battery 1x Hex Wranch Ballista BAL-DS-03: Reflex Red Dot Sight 1x30mm