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They are lightweight. There is minimal metal but it seems to be of good quality. The position of the protector is easily adjustable, simply by tightening the two large screws. The transparent membrane allows for work in low light. If there is a replacement, it is easy to change the transparent membrane. There is synthetic fabric (soft Velcro) that prevents sweat from running from the forehead to the eyes.

They come with four pairs of lenses. One pair is 10X, another is 15X, another is 20X, and the last one is 25X. The lenses are plastic but the image is clear. Unfortunately, they cannot focus in the same direction, meaning only one of the two eyes can look at the examination field. A positive aspect is that the LEDs come with two pairs of flat batteries and you don't need to buy them. Unfortunately, only the switch for one LED worked normally - the other LED was almost permanently off. The frame can break easily if the glasses fall but fits well when worn. Based on their price, they deserve four stars.

Simple capsules with Taurine in the form of white powder, at a good price. I could order bulk Taurine from China, but I wouldn't save much money.