The most guaranteed 405nm violet blue lasers you can get. 405nm violet blue lasers are one of the most special handheld lasers, while currently there are also 473 nm (bright blue) laser pointers on the market but they are still very expensive. It is worth noticing that the most popular 405 nm laser is not in fact blue, but appears to the eye as violet, a color for which a human eye has a very limited sensitivity, but pointed on many white objects the dot appears blue which is actually fluorescense.