Whoa you got some competition here:
https://bt.irlbtc.com/view/687839.0What are the practical difference between green or blue laser, and why should someone choose one over the other?
50,000 MW for 239$ usd, do you really think you will receive the product described? Genuine 50,000mw lasers go for 3000+$, Even if its 5000mw, i really doubt it will pack that power.
My lasers are genuine, can be tested, and refund issued upon unsatisfaction.
Difference between green,blue,red lasers arent really that much except the colour. However green lasers tend to be more bright..