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There are two types of blue laser pointers : 473nm blue laser pointers, or 445nm blue laser pointer. The 445nm blue laser has more violet color in the laser beam. The 445nm laser is between 473nm blue laser and 405nm violet laser.

The most popular 445nm laser is 1w 445nm blue laser pointer (1000mw 445nm blue laser). The 1w 445nm blue laser pointer is harmful to eyes(even not directly into eyes) and human skins. The blue laser goggles are the same to the green laser protective goggles, as it can protect the eyes from 370nm to 560nm wavelength. 

The 473nm blue laser is much more expensive than 445nm blue laser. If you just want a blue laser, choose 445nm 1W blue laser pointer. 
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