I took advantage of the offer to buy two of these at a very good price. It is an excellent light. Machining is perfect, and the beam is very good with a broad even central region and some spill. I see no colour artifacts. It came with a good quality 1000 mAh protected battery with a USB-C charge port. Brightness with the lithium battery is excellent, after 45 minutes on high it was still running and bright. The switch is a clicky at the end, it is quite stiff so it will not turn on accidentally. There are three modes, low, medium and high. It takes lithium, alkaline and NiMH cells. There is no mechanical lockout as the threads are bare aluminium. It comes with a decent and stiff painted steel clip. On the negative side, it has mode memory, I would prefer it to come on on low. And the end of the clip rests against some ridges, such that when you clip the light on a trouser pocket, it shreds the material, not a good design. It is fine when hanging on a leather belt. The light is so small that I prefer to leave it at the bottom of a trouser pocket. I wish lights areived without the clip installed, as removing the clip will scratch the annodising. Overall this is an excellent small light, very easy to carry, and surprisingly bright using the lithium battery.