“Warning: Extremely dangerous is an understatement to 1W of laser power. At close range, this Class 4 beam will cause immediate and irreversable retinal damage. Use with extreme caution and use only when wearing proper safety goggles with an O.D. of 3+ is required and 4.4+ for longer exposures.”
The Spyder III Pro Arctic features a 1 watt laser the company warns is the most powerful portable laser available. The beam is a thousand times more powerful than sunlight on skin and the manufacturer warns it could cause cancer.
via National Post
