I've been using this visor for a few months now and must say - what a great tool it has turned out to be... My old eyes are getting a little weak these days and it gets difficult seeing the smaller parts when building models... Trying to build while holding a magnifying glass is almost impossible, but with this visor and the 4 included magnification lens - the job just got easier... Not only does it have the 4 lenses you can also combined 2 different lenses at the same time to increase your ability to se those extra small parts... The included 2 LEDs on top of the visor casts a nice bright light on the subject as well... And for less than $20 it is (in my opinion) just as good if not better than some of the more pricier magnifier visors on the market... I highly recommend this product...