They work great for a while
354694
They work great for a while, but like all cheap things they don't last forever.  Great for handing to your friends as a small gift
2734151
Work good for a while but then stops working... we have gone through 9 of these wires in the past couple months cause they stop charging pretty fast. I had to keep moving the charge post in the phone cause ethereal wire kept pushing it down so it wouldn't charge.. even after a while that would just not work anymore..
1707799
I've used these multiple times a week for almost a year and they work great.
214328
Not sure how these will work in the long run but they work great for the last 2 months or so. For the price of them I can buy them again and replace them if something go's wrong. Nice and bright too.
3670913
I have owned two of these.  They worked great for several years and then the plastic started to deteriorate.  Slowly the plastic parts got sticky to the touch and then part of the plastic part which holds the sensor to the clamp broke, rendering the whole unit useless.  They may have fixed this problem, as these units were several years old.  I have found that Chinese gadgets often have a defective feature that shows up after the fact.

All that said, these are very inexpensive, and they worked well initially.  I guess a person could replace them every several years, but one shouldn't have to do that.
4333675
I am happy with them when they work. I have now bought a 2nd set and both crapped out after 6 months, leaving me hanging at a wedding reception. Problem is, they HAVE to work and the fact that they crap out is alarming. I am trying a different model cause i can't afford to be burned again.
4234212
These work great for a year or so, then the spring or whatever gets weak and they don't always turn off, leaving water running and wasted.  Good short term way to turn water off, just don't leave them unattended for long because they aren't reliable for the long term and could lead to HIGH water bills and damage.  (I have several of these)
1210866
They were great for a while, but within a few months one of the earbuds stopped working. They were cheap compared to the competition. You get what you pay for I guess.
192373
They've been working well for a while now, do what they're supposed to do.
3902041
They work for awhile after about 20,000 miles they became super warped. Not bad for a budget but I will be trying a bosch set up this time.
4374733
They're great when they work, but mine stopped working after about 8 months.
4037637
We had three of these installed in our home when it was built.  One of them needed replacing after three years, a second one died one year after the first one. The third one is still going strong.  When they work they are great.  When they start to die you hear an annoying buzzing sound and eventually it doesn't work at all.  I will keep replacing them with the same product until it is no longer available just to avoid figuring out how to wire a different product.  If this is not a replacement I would recommend trying a different product.
3767526
They worked great for a little while, but now they make the drink tast bad
4640754
The are good for form and functionality but they don't last.
3710258
When they work they are great but after a few months the little battery doesn't work and replacement doesn't seem to help
312286
These work great while they last, but quit after a few months., My daughter loses a BUNCH of cords, so cheap is the best deal for me.
4717293
Works well, a year later and they're still working great.