Thanks - I've got a dedicated UV light for now. It's very useful for finding where rodents are getting into buildings etc.These are nice, it’s a Fireflys with aux LEDs. The main LEDs are neutral white and ramp smoothly from moonlight to mega bright. The aux can be dimmed, switched off, or set to pulse and draw hardly any power. There is also a longer tube for a larger battery.
Also comes in black with cyan aux LEDs.