I received it safely yesterday. I am satisfied with the quality as I expected. I was worried because the product was not available and does't deal in Japan, but I am glad I made the purchase.
Thank you.

Beautiful device; as advertised!!! Took eight days to arrive in Canada and then a customs backlog took 10 more days to get it to my house. Signed for a package that looked a little scary for wear-and-tear but the packaging kept it safe! I have never used one of these before so a quick visual test looking out the window showed a nice spectrum. I will be using this with Les Wright's PySpectrometer2 setup at https://github.com/leswright1977/PySpectrometer2 so calibration will be done later. Thank you!!!!

I can highly recommend this little device. It may look like a toy but it is actually a very well designed and powerful tool with quite good resolution. A nice thing to try is burning salt (sodium chloride) in a hot flame (light over a gas stove) and seeing the bright sodium lines. You can just barely see the sodium doublet if you have good eyes. As mentioned in the description, if you point at the blue sky or even some bright clouds, you can very clearly see all the major Fraunhofer lines. One thing that is difficult is recording what you see with a camera. It's possible but a bit of a frustrating experience because it never looks as good as you can see visually.