back to ultra-violet (UV)

4 large dual-band focusable flashlight:




Right after buying the two separate lights it occurred to me it'd be easier if I just had one light that could
do both bands, so I picked up this much better combination light.

It runs on a 21700 lithium battery, which is just slightly longer than but noticeably wider than an 18650.

The beam is surprisingly powerful, and I wasn't expecting to be able to feel the heat of the light on my hand,
much like I can feel te heat from a regular 18650 flashlight. I suppose that has to be IR light causing the
heat, which isn't deal for a UV flashlight.

There's a row of four little LEDs in between the two band switches. At first I thought the intensity of the
lights was adjustable and that was an indicator of the brightness, but after a bit more reading I believe this
is just an indication of the battery's charge level.



DARKBEAM UV Flashlight 365nm 395nm ($17 at Amazon)


717SYSof9IL._AC_SL1500_:


darkbeam:



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