Features: 

• Fit all railed including full size,compact,subcompacts pistols. 
• 830-850nm, <0.7mW, Class 3A
• Ambidextrous On/Off switchs on both sides. 
• Exclellent performance for low temperature. 
• Windage and Elevation adjustable and secure mounting picatinny rail. 
• Easy operation and installation. 
• Battery preservation switch.