The LED in these are known to flicker after awhile. . .
"These Tube flashlights are known to have the LED eventually start flickering in the higher setting due to putting out too much power for the LED to handle. Mine did this after a few months and you can read about many others with a quick Google search. If the LED is replaced it starts working again so it seems Nightcore needs to throttle down the power output on the Tube model if they want them to last. They're great if you just want one for an emergency/barely use flashlight or maybe you'll get the one in 20 that doesn't have this problem, but for daily use or something to depend on I'd look elsewhere."























