Failed Experiment ...
343470
For the price, these are a good deal. I use them for conference calls on my PC, so audio quality isn't something I much care about or am qualified to rate, but the sound is good, clear, and the microphone seems to work well. Pairing was painless. However, the fit leaves a lot to be desired. They're tight on my head, and press on my ears (rather than wrapping around them). I'm not sure how well they're going to work for multi-hour calls. We'll see ...

UPDATE:
After using these on several long calls, I have to write them off as a failure. They definitely are uncomfortable after only 15-20 minutes. But the deal-breaker is the microphone quality. While I can hear the other end just fine, everyone complains that my voice is very muffled and scratchy. Just not acceptable. <sigh>
445609
Most of the experiments don't work because the valves don't hold air or water. The only experiments that work are the ones that don't involve the station.
1914934
I bought this as an experiment and think it failed.  As far as I can tell, it's just pink candy and doesn't do what it claims.
1582176
Thoroughly disappointed.  I tried using two different methods of baiting ants with this product.  I have found it to be expensive, as well as, ineffective.

Background:  I live in Southwest, FL.  It is rainy season where ch causes ant to seek shelter that is dry.  The ants I am having issues with are tiny little beasts that travel back and forth, single file (hints of military marching songs), and appear to have a light or white colored portion to their body.

METHOD 1:  I tried placing this product in their path.  They take a wide path around it.

METHOD 2:  A while back, living in a different home, in the same general area and during the rainy season as well, I had the same issue.

It was an apartment complex so pest extermination was included in the rent.  The exterminator assessed the issue and said he had the exact solution.

He took out a small bottle that had a substance that had the appearance of this product, a thick clear runny fluid.

He took the bait and mixed it with peanut butter stating that ants love the stuff.  He then took out a drinking straw and started cramming the mixture into the straw.  He then cut the straw into several pieces and laid them in critical paths.

BAM!  Within 15 minutes the ants were coming from everywhere to get ahold of it.  The next day, voila, no more ants!

We also found that the culprit was a bush and a potted plant was where they nested.

So I tried this method with the same results as using the product alone.  They avoid it.  I also tried this method as well, mixing it with sugar.  Negative, they avoid it.

But if I have fruit on the table they come from everywhere.  If I leave my cell phone in a room with the problem, the glue in the circuit board (known to attract ants) and pick up the phone I have to kill a few of the pesky little critters.

This product gets a definite don't purchase from me.  Again, it is expensive and ineffective.  Heres hoping that the company contacts me for a solution!
857245
tried hard but just didn't make it... just for fun remember,,,,
4128171
I attempted to test the product upon receipt by removing a #6 flat head sheet metal screw that was rusted and could no longer be removed using a #2 Philips screwdriver.  The counter clockwise drill points on each of these removers failed the skin test when I placed them against my hand and turned them counterclockwise to see if they would grab skin.  They were not sharp.  After trying the #1 and #2 removers I found that the drills just spun but failed to remove any steel material after the loose rust broke off.  I examined the drill tip under magnification and observed rounded off cutting edges on these two fluted drill ends.  So much for the claim of " Made From H.S.S. 4341#, the Hardness Is 62-63hrc".  I do not believe this to be true because the drill points could not be damaged under such light use immediately if the hardness was truly as advertised.
8:15 AM (23 hours ago)
4844158
Received last night.  Toasted two english muffin halves on the highest setting.  Not toasted enough, so I had to toast again and watch visually to cancel at the right time.  This morning I tried to toast another two english muffin halves, and I could not get the levers to stay down.  After two or three minutes of trying, I gave up.  I even tried holding the lever down manually, and the coils would not heat up.  We successfully sent people to the moon and back over fifty years ago and we can't make a ...........
1997647
First unit was dead out of the box.  Could not get second unit to work until we brought in an optical bean to line it up.  Much too hard to install in a narrow spot.  We did get it to start working, but then soon later it started registering false signals after.  Get 1000's of erroneous hits per day.  All experiments have proven fruitless.  Nice idea - but useless and a waste of money.
2144012
Almost gave this product one star until I started to experiment on how to get one reliable/uniform drop out of the bottle. You do so but shaking it one hardy time, try it.
4930670
Great Idea ... Great Hype ... both for a device that Just Simply Doesn't Work ... Stick it in the VCR and it pops right back out ... tried several times, same result.  The "instructions" say that - with some types of VCRs - the self-cleaning function of the unit might cause this thing to "do its job" in just 5 seconds ... didn't even stay in that long.  The final touch is the part where those same "instructions" tell you that ... all the hype about this being a "dry cleaning system" notwithstanding ... if one wants it to REALLY work, one needs to purchase their cleaning solution.

RETURNING TOMORROW ...
1726584
I really wanted these to work but unfortunately they were a big flop. We bought them to put into Easter eggs for all the kids. So they could race them after the hunt. (A great substitute for candy) but they didn't work at all. Talk about making for an unhappy easter. The kids were pretty disappointed And is was I. These looked so cool and fun. Just wish they had worked as advertised.
2599132
As a nanny, I am constantly looking for something to entertain and educate the 2 eight year old twin girls I work with.  This appeared very promising to work into a science lesson and I'm sure it would've been great; however, these 2 particular girls lost interest after only a few minutes.  We warmed up a small bit and attempted to mold it into something, they got easily frustrated and quit quickly.

I am not saying, this product is not good.  Just for my purposes with these 2 girls, it was not worth it.  It seemed to be promising though.  Don't want to discourage anyone else from trying it.
1421870
My first attempt failed miserably. It could have been me, my timing off, my method. Have not tried since first attempt.
4483712
It did not work.  At all, there was absolutely no difference...  I followed the directions carefully and I really feel like I wasted my money. :(
3626370
Sad! Christmas gift fail.  Worked for about an hour.  Propellers stopped spinning.  Charged, changed batteries.  Nope.  Just read another review from today with the same problem.  Too bad, because Santa failed!
1614217
Followed the instruction carefully....nothing
452904
Caveat emptor....

This was a poor-quality product that worked a total of zero times upon receipt.  Purchase something else instead - do not roll the dice with this product.