The Volta solar red dot is truly the best of both worlds combining solar and battery power to provide uninterrupted operation. The Volta is powered by 2x AAA batteries and features solar cells directly on top of the optic giving users the option to choose what works best for their situation. Volta red dots boast the Eclipse Light Management System a revolutionary technology for red dots which automatically adjusts the red dot reticle’s brightness based on the shooter’s environment. The heavy-duty Volta’s covered design is tougher than open-style red dots and a scratch-resistant anti-reflective lens coating adds even more durability. Other popular features include an adjustable-height mount digital switch brightness controls single side access to both windage and elevation adjustments unlimited eye relief and shockproof design. All Volta red dots come standard with a protective rubber cover low picatinny mount absolute cowitness mount and Sightmark’s Lifetime Warranty. - FEATURES - Solar cells allow for use with no batteries - 2x AAA battery backup - Eclipse Light Management System - Adjustable mount height - Unlimited eye relief - Digital switch brightness controls - Covered reflex design - Wide range operating temperature -22 to 122 °F - Reticle Type: 2 MOA Dot - Reticle Color: Red - Reticle Illuminated: Yes - Magnification: 1 x - Objective Aperture: 28 mm - Reticle Brightness Setting: 1-10 - Material Window: Glass - Eye Relief mm: Unlimited - Elevation Adjustment: 120 MOA - Windage Adjustment: 160 MOA - MOA Adjustment: 1/2 one click - Finish/Color: Matte black - Body Material: Aluminum 6061-T6 / plastic/ rubber - Maximum Recoil: .338 Win Mag - IP Rating (waterproof): IP67 - Shockproof: 3ft / 1m - Fog Proof: Yes - Lens Coating: AR red - Mount Type: Picatinny - Battery Type: 2x AAA - Battery life hours: 800 on High 400000 on Low - Battery Voltage V: 3 - Operating Temp?F/?C: -4 to 140 / -20 to 60 - Length (in/mm): 3.23/82 - Weight oz: 7.3 - Width (in/mm): 1.37/35 - Height (in/mm): 1.98/50