Not sure about the calibration, but it's not an old device. Even then, any drift should be within an order of magnitude. There was no visible beam in the dark so it is likely well below 15mW.
TLDR: yellow (y), tinkerlasers (n)(n)
So I opted to search for a laser with my favorite color. After searching the web I found about a site called Tinker Lasers. Now from their site you would think it's too good to be true since they seem to have every such a good selection... and of course it...