How long do they last?
1044428
I can't imagine that there's any lifespan, so to speak. They are rock solid and do not give the appearance of losing their structure through use or age.
1044429
They use a replaceable night light bulb, so when one burns out you can easily put another in, through the base. I've never heard of a time limit regarding the supposed health benefits, as I have no idea whether those exist at all. It DOES give off a wonderfully calming glow.
1044430
Each light is carved so there might be slight differences in thickness, but mine looks like it will last a long time, it's pretty thick, fairly heavy. Depending upon how often you clean it and how much humidity it's in, this could become a family heirloom.
1782943
They last about a year. You can buy upgrades for it ( more run time). Batteries aren't covered. They are expected to be replaced.
448836
I don't know for sure how long they last. You may need to check with the manufacturer, but as long as they stay sealed in the packaging so that they don't dry out, they should last a long time.
1664617
There is a little variation with some but, on average, I would say about three weeks. I've used them for about a year in two separate locations in the house. Hope this helps.
950683
Don't know, I haven't had to replace them. But it's my understanding they last or thousands of hours.
723171
They are designed to last approximately 30-45 days. However, I have seen customers that have gotten much more time out of them. An average usage time would be about 2 months.
1752837
Mine are fairly new (a few months old), and they're still perfect. With decent care, I figure they'd probably last a year or more with daily use. But I don't really know--this is my first set.
312137
I really don't know. I had bought it for my mother in law. From what she has told me, they last a good while.
540335
They're good for about three years. They only last about a week so that's plenty of time.
2196390
Not sure, I have only had mine for a short time but they are designed well and seem like they would last a long time with proper usage.
333015
They last a long time, I have some from a year ago. Of course one or two of them may not last, but over all they are good.
354437
I believe they don't have an expiration on them. They seem to last forever.
2115477
Can vary greatly. Mine lasted less than a year. But also had some that lasted two years.
197355
I can't answer for sure, but I bought mine in March 2013 and they are still as good today, 4 months later. So, at least that long. :)
272878
I can't say exactly how long they last, but it's decent. long enough that I don't remember changing them
2228130
During the warmer months, they've lasted 2 to 3 months. Winter time, I would check every 2 weeks depending how cold it gets.
1946230
Mine hasn't burnt out yet so I am not sure how long they last. Ours are not located in a spot where we use them every day either.