For faster, more precise target acquisition at the range or wherever you hone your skills, the Sightmark MTS Mini 3 Solar Red Dot Sight delivers dependable easy-aiming performance. Plus, its 3-MOA red-dot reticle runs on a single CR2032 battery for up to 200,000 hours of battery life or draws power from the top-mounted solar cells for continuous use in changing conditions. The Eclipse Light Management System automatically adjusts reticle brightness to match the surrounding light, while digital switch controls provide additional brightness adjustment. The MTS Mini Solar features a shockproof design, unlimited eye relief, scratch-resistant, anti-reflective lens coating, and a 22mm objective lens. Protected adjustment caps double as tools for windage and elevation adjustments. A hinged battery door simplifies battery changes. Adjustable mount height. Operates from 22 to 122F. Includes flip-up lens caps, a low Picatinny mount, and an absolute co-witness mount for AR firearms. Mfrs. lifetime limited warranty. Dual-power battery and solar operation 3-MOA red-dot reticle Up to 200,000 hours of battery life Eclipse Light Management System Digital switch brightness controls Scratch-resistant, anti-reflective lens coating 22mm objective lens Protected adjustment caps with adjustment tools Shockproof design Unlimited eye relief