Features:<br />Beam Intensity: 5mW peak， 532nm<br />Wavelength: Class IIIa， Continuous wave<br />Laser Beam Divergence: 1.2 mrad<br />Spot Size: approximately .5" at 50 ft<br />Range: Up to 100 yards daylight， 2 miles at night<br />Dimensions: 2.84"L x 1.37"H x 1.45"W<br />Weight: 3.3 oz with battery<br />Construction: 6061 Aircraft Grade Aluminum， front and rear covers in high strength Zytel(R) polymer<br />Power Source: 1x CR123A 3v Lithium battery (without battery)<br />Battery Life: 6+ hours of constant laser runtime， 10+ hours of pulsing laser runtime， 60 minutes of laser and light runtime<br />Tactical Light Output: 178 lumens on continuous， 224 lumens on strobe mode   <br />A total of two buttons， Press two buttons at the same time for a while ， the flashlight will be bright， Press two buttons at the same time for a while again ， the green laser will be work ， By pressing the two buttons at the same time， Function switching