WADSN Tactical NGAL Laser Red Green Blue IR Dot Hunting M600C Flashlight Dual Pressure Switch NGAL Sight Set. BATTERY:CR123A/163401(no include). BASE:20mm-21mm Picatinny Rail. INTERFACE:2.5mm plug. Dual Switch fit:20mm picatinny, mlok keymod rail. IT HAS STROBE, CONTINUOUS ONAND, MOMIENTARY ON MODES KNOBTO ADJUST LIGHT BRIGHTNESS ROTATE CLOCKWISE TO INCREASE BRIGHTNESS ROTATE COUNTERCLOCKWISE TO DECREASE BRIGHTNESS.