Dual lamp - newbie Qs

Hi,

I'm rather new to this and was wondering where I should start to read on flashlights that can use 2 lamps, a 4500-5000K and an Ultraviolet LED. I'd like to build/customize this driven by a single 18650 cell. I don't care about the highest lumens possible, this is a flashlight to keep on my PC table to occasionally inspect dark PC cases and PCBs up close. I do care about the highest power efficiency possible for longer battery life. I look forward to building my first flashlight and now wish I hadn't sold my old Maglites seeing the mods on here. Happy to hear thoughts on hosts, drivers and anything else for this build :)

Dunno any offhand. Only some headlamps that have white and red.

I don't need them to be in the same lamp, I was thinking along the lines of one body but two lamps/reflectors..

I have definitely seen multipurpose lights like that here which included UV, can’t recall where though, but they do exist.
I suspect there was a quality keyring one similar to a Nitecore TIP quite recently, but it was another brand.

I was under the impression I could build one with two lamps, each selectable.

HAH, I found it.

Of course you can build your own, easiest way might be to build a triple with one a UV wired separately, not sure how the switch could be done though, others can comment on that.

Or if you want a ready-made probably good quality convenient light there is this:-

Astrolux K1 with UV