I saw an advert on the box for these JML Mighty Sight specs and as my eyesight isn't what it was for fine detail and fiddly little parts even with varifocals I thought I'd try them and bought two pairs, buy one get one half price, arrived two days later, the wife was the first to try them with her cross stitch and was very pleased with them because of the built in leds she didn't need the angle poise mag lamp that gives out so much heat, then I tried mine in the work shop on the Tamiya Honda I'm building, a bit strange to start with but once I got used to them all the tiny details were clear and again with the leds there's no dark spots, they come with a USB charge lead but any mobile phone lead will do.
Joe.