I was not pleased with my last Nuwai purchase and don't plan to make another one. I had the 2 cr123 cell version of the popular nuwai q III which was a 2 stage clickie but after about a months use it was no longer off/low/high it was off/high/high. Just my opinion.
I'm curious about ordering this one and seeing if it will screw onto my River Rock 2AAA body... http://www.batteryjunction.com/tlf-1n1aaa-.html
I hope it's using something better than just a 1 Watt Lux though..