The NcStar 1x40 Red Dot Sight w/ Built in Red Laser (DLB140R) is not only a red dot scope but it has an integrated red laser on the side. This adds sighting options not found on other red dot sights. The NcStar DLB140R model features a black anodized aluminum body unlimited eye relief and field of view integrated quick release 3" weaver-style mount. The side mount external < 5MW laser sight is fully adjustable with beam power of 635-655 nm.The sight and laser can be used together or individually and are powered by cr2032 lithium batteries.Features- Unlimited eye relief- Built in fully adjustable laser sight- Five brightness settings for Red Dot Sight- Ability to use Red Dot or Laser Individually or both at the same time- Built in Quick Release Mount for use with most Weaver Style/Picatinny rails- LED (Light Emitting diode) 100% safe for the eyesSpecifications- Material: Black Anodized Aluminum- Length: 4.35in- Width: 3.45in- Height: 3in- Weight: 11.3oz- Mount Length: 3in- Objective Lens Diameter: 40mm- Magnification: 1x- Reticle Type: Red Dot- Dot Size: 3 MOA- Click Value: 1 MOA- Lens Coating: Ruby- Battery Type: CR2032- Laser Maximum Output Power: 5mW- Laser Wavelength: 635-655nm