How long does it stay on ?
1148355
It stays on until you turn it off. Mind has never went off because of broken glass but I tap the window my mistake and it went off very very very loud and didn't stop until I turned it off.
1207028
Yes...but the longest it stays turned on is 30 minutes....it is relaxing once you find your personal setting. Have had it for a while...no problems
425325
As far as I know, it stays on until you turn it off. It makes a nice night light, too!
1627126
I keep this plugged all the time. I turn it on when I place a cup and leave it for several hours. Usually I have it on for 3-4 hours, but there are many times that I left it on more than 5 hours, and it seems to be fine. I even left it on over night by accident, but it was fine, ...although I don't recommend it.
1223973
There are three or four time settings that allow you to determine how long you want the light to stay on after it's triggered. They range from a short time for testing, to several minutes. I don't remember the exact numbers of the top.
546605
That depends on how long it's been on. It will go off after 8 or so hours. But if it happens right when you put it on and it doesn't heat in about 1/2 hour or so, call Amazon and see about returning it for one that works. Mine goes on and I put it where I want it set and it stays there for approximately 8 or so hours. I can turn it down or up when I feel that is needed.
1627128
I've had mine on for about an hour at it's longest. I don't leave it on without something in the cup, and I don't leave it unattended when it's on. The switch is very convenient for turning it off and on as needed. It also heats up very quickly. I've been using it for about one month, so I can't verify durability. It seems to work well, except it's not quite hot enough.
1262802
I leave it on for approximately 5 minutes, sometimes a little less, seems to work great!
1166845
A couple hours. Some people are saying they plug it in while its on. You are NOT supposed to have it on while plugged in. It says right in the directions
96438
It stays on approx. 8 hours with a low dim light but gets brighter for approx 3min with movements. I love the lights and recommend getting them.
357193
That depends on the setting. I've never had it on long enough to go out. I usually use it on the brightest setting and have had it last >90 min without dimming. I believe the manufacturer states that it can last 2 hours on that setting. Lower settings will obviously last longer.
959719
It shuts off and doesn't drain the battery much. I'm not sure how long it stays on.
2241041
It stays on unless you turn the button off. Hope that answers your question.
90535
9 minutes. I just set it again to keep it running longer. I've been very happy with it.
2006340
I'd say ours last about 3 weeks, considering it stays on for a half hour at a time and we usually put it on 2-3 times a night it's not too bad but we will probably invest in rechargeable batteries for it. It is a lifesaver though!!!
2725
I think its lasted ten hours. Then it'll start blinking rapidly light blue for a minuet and shut off. I usually have it on during work continuously.
1780451
I use it for work five days a week and leave it on all the time. I believe it has been more than a year. Come to think of it at least two years.