This is my favorite laser pointer. If you don't like it, please don't leave malicious comments! The output power is up to 20000mW (15000mW is also optional), which will exceed your imagination! The blue laser is stable and can burn things from a long distance. With adjustable focus, you can engrave metal. We use the best materials and multiple internal protections to ensure stability and durability. We can guarantee 100% true power and high safety.