ATTENTION! Translated by a computer translator.

Green and red lighting, magnifications from 3x to 9x, 40mm lens diameter Height and side adjustment to improve shooting accuracy. With flip-up lens covers Waterproof and anti-fog thanks to O-ring sealing and nitrogen filling. Lens cap cover provides ultimate maneuverability and helps protect both the lens and eyepiece lens while keeping the lenses clean Rangefinder provides fast, easy, superior experience for shooting at different distances. Made of aircraft grade aluminium alloy, durable and versatile Comes with 2 pairs of rail mounts, suitable for standard 11 mm / 22 mm Weaver / Picatinny rails, fits most rifles and air rifles. Please let us know if you meet any problems. We will send you replacement for free