came super fast to Canada. works great. had it working within 2 hours of opening the box. the laser wattage in the ad is miss leading. The advertised wattage it the energy consumed by the laser. not the lasers optical power. the 20 watt unit is equivalent to 5.5watts. 5500mw. and that is the reason for the 4 star instead of 5. I knew this when I ordered but many wont.
very good quality and working perfectly. I recommend this seller.