how many hours of life are guaranteed
1089615
Absolutely do not buy these bulbs or anything from this company. Over 100 bulbs I purchased. Mine have been installed for about 12 months and I've replaced 40% of them. They are scamming people. I ended up buying Sylvanias from Home Depot online. Good deal at around $3.50 each when purchased by the case.
1089616
The box shows 1.4 years based upon 3 hours per day. Our use is much less and we have no failures so far.
1089617
There is no guarantee printed on the material. In my experience, they lasted about 12 - 20 hours.
1995826
Depends on usage. If you are doing office work and web browsing, it should last more than 3 hours on a full charge.
545533
Its a L.E.D. Bulb rated for 50000 hours, if you use it 6 hours a day that 25 years of life. Most likely will out live us.ThanksBill
1772595
I haven't tested the life span. I plug it in at night to be charged for the next day.
897469
It's based on 3/hrs of day of use, which is 1,095 hours/year, or about 22.83 years. As with any product, using it more or less frequently will extend/reduce the life. In my own case, I've used three of these for more than 3 hours a day for 2.5 years or so, and have not had any issues so far. Also, the lifetime quoted assumes you follow the directions (i.e., don't install this in a *fully* enclosed fixture as the heat buildup will rapidly degrade the LED).
1071453
The extended life battery generally lasts about 2.5 hours of continuous use.
1036655
Exactly 167 years, 5 months, 28 days, 4 hours, 37 minutes.I'm kidding. I have no idea, but it would seem that with proper care they should last a few years. :)
1553960
I believe they are guaranteed for 10 years. I have had mine for 2 years and love it.
480016
Recommendation is 24 hours. I routinely play them after 6 hours with no apparent ill effects.
933462
Depends I have about 3 to 4 hours on batt live at one time, it can be up two 6-7 if you are not using a lot of apps! Some people say 12 hours(hard to believe though.)
1806390
"25,000-hour lifetime compared to about 1,000 hours for typical incandescent." Per the manufacturer Data Sheet.
1601317
"Double minutes" means you get twice as many minutes as what you pay for. So, if you pay for sixty minutes on a phone with double minutes for life, that means you will get 120 minutes. But that deal is about two years old. Check out the phones that offer triple minutes for a better deal.
13523
It uses an LED lamp, so it should last upwards of 50,000 hours. You probably won't ever have to replace it; at 4 hours of use every day it will last you over 30 years.
800075
No but they are rated for 50,000 hrs which is over 17 years at 8hrs a day everyday.
1113701
For me it's about an hour, maybe a little longer on gaming mode. About 2hr and 15 min on balanced mode, just depends on what you are running, brightness etc. It has never died on me when I needed it though.
1866783
According to the website, this is the response posted, "LED lights are medical grade and each treatment panel should last up to 50,000 hours of use."
1925193
In addition to the above comments, MK-4 has a half-life of 1-2 hours; MK-7 has a half life of 3 days. That allows your body to build up a buffer.