ATN IR940 IR Illuminator High power LED emitter 3 modes of operation East rail mounting system lluminates target while staying undetectable Wavelength: 940nm Beam Angle: 5Adeg- 80Adeg Operating Temp: -20AdegC to +40AdegC 3 Levels of Output: Low (50% w/ 6hrs of runtime), Medium (75% w/ 4hrs of runtime), High (100% w/ 3hrs of runtime) Weather resistant Dimensions: 1.9" x 1.9" x 5.8" Weight: .38 lbs 1-year Warranty Includes 1 lithium 18650 battery with charger Compatible with ATN night vision optics