good for up to 10 minutes...
359749
these were phenomenal, and still are but it depends on how long you use them for continuously. Within the first 10 minutes of your workout the grip is great (what a difference than without them or even with chalk) but anything longer than that without a break they begin to get slippery, which defies the purpose :/ short term use though is wonderful.
1806820
Lasts for about 5 minutes while my dog is on it in the car before the clips come undone from the front seats.  I had a really cheap one from another store that lasted a lot longer.
2525577
Died after about 10 hours of use.  Just makes clunks and whirrs but plays nothing.  I'm more than 30 or 60 days from the time of purchase so it's a loss to me now.  But it was truly plug-and-play, which I appreciated.  The replacement has needed more intervention from me in order to work.
1485760
I have installed many many stereos in cars throughout my life. Maybe I just got a defective unit, but this one was trash. It worked fine for about 10 seconds to 2 minutes. Then it died. Unplug from harness, reattach, and it would go another minute or two before dying. I returned it for a full refund the next day.
3216518
My kids enjoyed it for the 10 minutes that it lasted. Water burst.  I intended to repair it with the tape that was included.  However, I must say that the out-gassing order was so strong that I decided to put that idea on hold.  The odor has not stopped  permeating  my outdoor shed- a full 10 days later.  I won't be giving this back to my kids as I don't want this smell/ chemicals that create this smell in my home.
4708467
Loved it, but then it's not as good as the sample I got. It last for only 10 minutes of that, so I not completely thrilled by.
3024316
Lasted 10 minutes, dog ripped through the harness while walking at a moderate pace.
4609096
I gave this as a gift to my niece and she loved it -- but like many other reviews, it stopped working after 10 minutes!  We tried taking it apart and putting it back together to no avail.  It is horribly made - great concept, but doesn't work or last long.
1866262
Wow, this horrible thing broke after less than ten honks. My daughter wanted to use if for Halloween, but it didn't last 5 minutes, let alone till Halloween night. Pure garbage.
1897849
It worked for about 10 min.  Then one of the bulbs do not light up.  It does not stay on shuts off after about 10 min.  waste of money if you ask me.
3766886
Ithe played for 10 minutes and won't work after that. Wasted my money.
374308
This worked great... for about 10 minutes. I'm not even exaggerating, it stopped working that quickly. I wound up spending the extra money for the Garmin 10 and It's been great for the last year.
789863
After using this for a couple weeks, usually 10-20 minutes at a time at home, I noticed that it would start turning itself off after only 3-4 minutes of use. I probably should've checked the one-star reviews to see what kind of problems I might be up against. Then again, I thought I would at least get through this winter. Oh well...
3869766
Sounded very good, but died when it was about ten months old! I only used the speaker 10 ten times or so. Save your money and buy a better quality blue tooth speaker!
3847038
10 minutes - lasted just 10 minutes; my 8 month old Irish Wolfhound had it in pieces.  Not a "10" by the Tuffy rating system, maybe a 6.
1734547
This device worked fine for about a day and a half. I had used it for a total of 10 minutes over that time and then the device completely quit working. I tried it on several systems with different operating systems and different SDR programs to get it to work again, but the results were the same every time. I returned this product and bought something else. Spend a few more dollars and get something that will last.
841662
does not last long.  work well for about 10 to 15 days.