Received the first green laser, didn't work. Sent it back (postage $25 to return it). 2nd laser worked a few times, and then didn't work. Dragon Lasers said to return it, (another $25) and if it was broken, they would return my money.
I didn't return it, because I didn't want to waste more money.
I wrote a review on their website which they would not publish. All the reviews are 5 star (that should have been a clue not to buy from them). They said they don't publish fake or biased reviews. They obviously don't publish negative reviews which are truthful.
DON'T BUY FROM THEM!