Focus Adjustable 650nm 5mW Red Laser Dot Diode Module DC 3V5V
Laser Module 650nm Red Laser “Dot” Diode (Adjust Focus 5mw DC3V-5V). 650nm 5mw Red Dot Lazer Diode. Adjustable Foucs Dot based on your Working distance,if laser spot is not a dot,you need to adjust the front cap to focus dot.