Holosun LE221R Red Visible IR Laser Sight Black. The LE221R features a grade 5 titanium housing with a quick release Picatinny rail mount. The LE221R is powered by a single CR123 battery which can provide up to 5000 hours of battery life. The rear facing selector switch lets the user select between visible low visible high IR low IR high activation using the included remote pressure switch or turn the unit OFF. The LE221R also includes tactile windage and elevation adjustments for a precision zero and a top mounted activation button. Specifications for Holosun LE221R Red Visible IR Laser Sight: Manufacturer: Holosun Color: Black Beam Color: Red Finish: Matte Battery Type: CR123 Battery Life: 50000 hours Battery Quantity: 1 Water Resistance Level: IPX-8 Fabric/Material: Titanium Included Accessories: Remote Switch Fit: 1913 Picatinny Rail Package Contents: Holosun LE221R Red Visible IR Laser Sight QD Release Mount Remote Cable Switch T10 L Key User Manual CR123A Battery