Really lights up but dies off fast.

 

And one for the BB

 

I'm assuming it's not a good idea to use backlight on tritium as it will degrade the lume further... Right?

Not in the habit of doing this often. Just used it to check the tritium lume on my 76 speedy.

 

I don't think it matters -what matters is that tritium has a half light of 12.5 yrs

 

wow, just wow. yes it will degrade until the lume is black. so best don't wear it in sunlight or use UV light. also luminova is way better cuz it's not radio active and BLUE !!!