Dragon lasers
Dragon lasers are high power green (and sometimes blue and orange)lasers that are made in China, hence the dragon. Distinctly different from your average laser pointer or portable laser.

laser pointers are normally 5mW or less, have a beam that is difficult to see anytime other than night and can't burn anything. Great for presentations. Dragon lasers are 15mW upto 300mW or higher, have a beam that is clearly visible in broad daylight and can light matches and cigarrettes. Too powerful and dangerous for presentations.
My teacher said i can only use a laser pointer at school, not a Dragon lasers.