The Vortex VTX Strikefire2 Red/Green Dot Sight offers split-second target acquisition and maximum field of view, as you are able to shoot with both eyes open, and the Red/Green Dot allows shooters a choice of dot color. Versatile and reliable, the StrikeFire II is for shooters who want a quality red dot sight at a reasonable price. Sleek rear-facing controls allow for easy adjustment of ten dot intensity levels – the lowest two settings are night-vision compatible. To shift between dot colors, simply put continuous pressure on the down arrow button. The dial covers for the windage and elevation adjustments have a raised bar that can be used to make elevation and windage adjustments. A 30mm aluminum alloy chassis provides extra-high recoil rating, the Strikefire is waterproof and fogproof and fully multi-coated with anti-reflective coatings on all air-to-glass surfaces to increase light transmission. It‘s rugged construction is shockproof to withstand recoil and impact, and it’s hard anodized finish is highly durable and low-glare. Operating temperature is rated from -22 degrees to +140 degrees F. A cantilever ring mount puts the optic bore center 40 mm above the base, providing lower 1/3 co-witness with iron sights on flat top AR-15 rifles. Unlimited Eye Relief offers non-critical eye relief for rapid target acquisition. A 12 hour auto-shutdown feature helps maximize battery life – typical battery life is 300 hours at maximum brightness and 6,000 hours at minimum brightness setting. The Vortex VTX Strikefire2 can be used in conjunction with the Vortex 3X magnifier, and has a Lifetime Unlimited Unconditional Warranty – Vortex will repair or replace the product in the event it becomes damaged or defective absolutely free – no matter the cause.