I think that it is good to be able to change the magnification. You can use it while you are wearing glasses, but it is hard to see due to astigmatism. It is also a double installation, but this is rather difficult to use. It seems better to use one by one.
1. Shinwa measurement product number: 75737 purchased, it is the same shape and ¥ 1000 more expensive than other companies. It will be better if you place the battery compartment a little above. 2. Made in China (Chinese design?): When the lens is lowered on the face, the lid of the battery case / cover hits my head and it hurts. 3. Although it is a good idea to install two lenses, if you install two, you can not jump up the lens. Has the designer used the product? 4. The idea of installing two lenses is good, but the lens closer to the face can not be completely thrown up. 5. Remedy: The second lens holder part near the face is cut and used as a single lens. Usability is very good.
It is good to have a lens change (magnification lens). I feel distorted things in the lens itself. I feel that my eyes do not match a bit until I focus. I use various manufacturers, but for the price, I wonder if it is okay.
I prepared the head magnifier for the first time in order to use it when processing small parts of the plastic model. It is ◎ that it can be expanded in two stages. It was lightweight and uncomfortable during wearing. Just because I never looked at objects through a loupe lens, it seems a little uncomfortable if I have been looking through the loupe for a long time. In that case, you can raise the loupe quickly, so it seems like you should use the loupe frequently to lower or raise it frequently.