This is the thing with Sanwu... They've changed from .com to .org, the problem is the 2 sites were running at one stage (just my luck), when I bought this it was advertised as 2.5W tri beam on their .com website but guess what?.... When I contacted them they said it's advertised only as 1.7W on their new website. I love their lasers but I've had so many problems with them ��Well it isn't quite 2.5W. But it is powerful. I would speak to Sanwu about this laser. Nice job getting the laser operating more than it was. I hope you get this resolved.