SureFire M952V LED WeaponLight for Rifles and SMGs, White and IR Output, Black 150 Lumens of white light output for 2.5 hours and 120 mW of IR output Virtually indestructible white/IR LEDs regulated to maximize light output and runtime SwitchesMomentary-on tape (7" cable), momentary/constant-on pushbutton Mounting systemIntegral Swing-Lever clamp for Picatinny rails ConstructionHigh-strength aerospace aluminum with Mil-Spec anodizing; impact-resistant polymer; coated tempered window