The lenses are of very high quality plastic, very clear image and not a lot of distortion. Magnification is excellent. For me, where short distance focusing becomes a problem with soldering because of age (I'm almost 48) it's just what I needed. The larger the magnification, the closer you have to be to the subject so 2 or 2.5 x magnification is a good compromise; 3 x magnification you have to hold the subject about 10-15 cm from the glasses. The headband is adequate but the shape does not match a head so it sits not really comfortably on your bed. Also quite hard material. LED also provides good amount of light and can be adjusted up and down. For that you have to pull it out an old as there are 3 AAA batteries in it it becomes quite heavy so I use my own lamp and take the LED light out, it's detachable. But all in all a really good product I will be using many times to come. Highly recommended.
VERY THANKS