Laser type: Diode laser Color: SilverWavelength: 810nm Energy Density: Up to 25J/cm2 Model PRO201722 Spot Size: 9mm X 9mm Diode laser stack: Germany Cooling Method: cooling Intensity Levels: 5 levels Lifetime: 10000 hours with about 50 million shots Weight: 2Kg Handle Size: 18.65 cm X 6.15 cmNo Need For Cartridges Chnage It's effective, fast, easy to use, painless and long life time