5 seconds of illumination then darkness
593023
Right bulb for my lamp.  Stayed lit 5 seconds then went dead.  I put in another bulb and it it still going strong.  What a pain in the neck to have to deal with this.
2483685
Puts out a beam of light , but I bought cheap batteries and thy run down in 10 min . Recommend
2936147
After a day in the sun the light only lasts about 5 hours. I would expect at least twice that. What should I expect??
68869
DO NOT BUY - light shuts off every ~5 minutes for no reason. I bought this to ride my road bike during low light conditions. Didnt need to use it until recently since the sun goes down so early now and of course its past the 30 day amazon return period.

When you buy a light for safety so cars and pedestrians can see you on a bike and it shuts off every 5 minutes for no reason, it doesnt exactly make your ride safer.
1221939
Very long pause before being able to see when returning to natural light when compared to a previous similar unit.
1611514
I am not that thrilled with the time that they are lit once it is dark outside.  I thought I'd have at least 5-6 hours but it is only about maybe 3 if we're lucky.,
1570636
The light was really bright for literally 10 seconds and then dimmed to what would be very much an unacceptable amount of light (like an old Xmas tree light-not an LED). This product came with what I assume are new batteries but I would not buy this again based on its 10 second life span.
1134085
Now light going into darkness will control my lighting!
1077485
Needs to be really dark with no ambient light to see them
3709218
Light doesnt work unless its pitch black in the building.
1129750
Extremely dark - provides almost no blacklight power.  About enough power to blacklight one piece of white paper placed immediately next to the bulb.
1563898
Too dark to see objects in the night, especially driving over 100mph.
That is with the contrast turned all the way up on the game settings.
4877845
Light only flickers for a short while then goes out, occassionally comes back on for a second, flickers and goes out again
3711238
I have ordered two units like this one and they only last a short while before the lightening starts getting weak.
157556
And it burned me after a few seconds of testing with sunlight
4017069
Lots of light but they take a second to turn on.  That seams petty but its just long enough for you to question if you really did flip the switch thenwhen you pause to check the switch, they light up.  I put them on a walk in closet.  Its been six months and I'm still not used to it.
4642677
Nice having a light in dark area, I bought one and it has gone out so I pulled it down and replaced it until I can find out what happened to the other one.