Still hard to check the wavelength between 405nm and 445nm

[joeyss]

Simple way to tell for anyone else that might get this issue. Go in a small room and hold it up to a ceiling. If the room has that blacklight glow it's a 405.

445 will have a weird blueish glow.

even around 50mw of 405 will do it. 405 will also have a dot you cant focus well with your eyes on unlike other lasers and it will look purplish.No idea why they called it bluray

 

[hakzaw1]

Okay
I did not look hard at the pics in the OP-

these are the same 3$ lasers anyone can get w/ free ship if they keep bidding low-NONE wil be 'blue' ....no way no how-
its a blue-ray diode and to some in china that makes it a blue laser-

this thr isead too much fuss over a cheap pen pointer- you did not know what you were doing/buying- complaining to the sender is petty--

move on

buy from LPF members and none of this willh happen.

--at first 405 pointers were $140 and a were actually just 5 mW
you got a good deal in retrospect..

hak

 

[Evans]

Not sure if you were able to get this resolved yet, but as others have said the colors should be visibly quite different. I would send the seller a copy of your picture showing the two identical dots along side the picture I have posted below:


This is a picture I took of my collection last year. On the far left is 405, and to the right of it is 445. This is what it should look like. This was taken with just a basic point and shoot camera, so not a case of an expensive camera being better able to distinguish the wavelengths.

Really perfect suggestion. You are clever enough to fix the roll laser pen with clips.

 

[hakzaw1]

Simon--where did you score those high-tech laser holders??? ha ha ha

J/K I have used them too...