Hi, a jus turn on my laser and i see green light on top of it but no beam at all.mabe i dont know how to use it?

Green laser pointers are fully legal for laser pointer use in most countries and at just below the maximum allowable legal power limit of 5mw for a pointer in most countries. We ensure that every high power green laser pointer is hand calibrated and tested to output at least 4.99mw and thus offers the expected stunning power expected of a real constant wave green (532nm) laser pointer, much brighter to look at than a regular red laser pointer and always with a visible green beam.
This high power green laser pointer will impress your coworkers, family and friends. Use it for your next presentation and everybody will know that you are ahead of the latest technology.
METAL BODY

This high power green laser pointer features a top precision all-metal body. Don't be fooled, some green laser pointers have a plastic body that is metalized. Our all-metal body green laser pointer is therefore robust and durable.

HIGH-QUALITY OPTICS

Our high power green laser pointer features an all-glass lens that focuses the beam to a sharper, rounder, clearer dot.

BRILLIANTLY BRIGHT

Powered by a Sony diode with a lifetime of 3000-5000 hours, it projects a high power green dot up to an incredible 2 miles away. And it so powerful that the beam itself can be seen for several hundred feet in darkness. That's why astronomers use it to point out constellations and stars in the night sky, the US Army uses it for training exercises, and executives at all levels use it to enhance their prestige. It's a very important tool if you get lost while hiking.


http://www.onlinelaserjp.com/green-laser.html