UPDATE: I have received the laser today and in short words I must say I don't think its 510nm at all lol, it looks much greener than my 520nm, makes me wonder if my 520nm is actually 520nm or not.
Pics were taken in my room and in semi-dark garage.
Came in a nice wrapped box:
Typical nice little branded box:
Typical looking laser pen like usual:
My 520nm:
About 50mw 532nm (Left) 50mw 520nm (Middle) "510nm" (Right)
The new 510nm (Left) 520nm (Middle) 532nm (Right):
My 520nm looks bluer on camera than to the eye.
It is a nice laser pen for the price but I am not sure what to think about the wavelength, maybe it is not 510nm and is actually about 520nm, maybe my old 520nm laser is actually 510nm or 505nm, to the eye it is definitely not 532nm, and its definitely greener than my old 520nm. I will take more pics at night. When my Sanwu 505nm comes I will make more comparisons.
Also to Paul: Yes the beam is visible in a lit room when looking down the axis and slightly visible when looking from the side, it is about the same brightness as my 50mw 520nm, its definitely not 5mw.
I tried editing all the pics but idk why they didn't change size, here is the link to all of them:
https://imgur.com/a/D9slX
Edit: I think they are fine now