Good data horrible product.
590531
The tracking is good and I liked the data it provided. However the center piece kept falling out of the band and eventually got lost. If you are active and plan to wear your tracker on your wrist find another product.  This one falls apart all the time and eventually you're out $100 because of poor craftsmanship. Finding a new tracker now that this $100 was thrown down the drain
3728424
The software is terrible. It is too slow to stream video or music. This product lasted just over a year. Now ALL the data and family pictures I presumed would be safe are lost. Don't waste your money.
2487810
Bought these a few months ago.  All 5 of them are now not holding their memory.  When I plug any of them in, Windows immediately wants to FIX them.  If I continue without fix, I find that the Data on them is corrupted.
Format them, put new data on them and less than 24 hours later, the data is corrupted.
The only thing I can use any of them for now is to transfer data from one system to another.  AND the data can not be more than about a GIG because they will do that dreaded "USB LOST Connection" beep.
So, total waste of money.  Lance
1261152
Great device---LOUSY SOFTWARE!  I have to be honest.  This is a good device, right out of the box.  BUT BEWARE!  The software used to download data is really, really bad!.  It won't sync consistently.  You can sync one night before going to bed, then the next morning it won't sync for a week.  The you take the manufacturer's advice and reinstall software (lose all you previous data) and it will sync once again.  For a day.  The problem seems to be with the Ant stick software which Garmin uses for bluetooth connectivity.  Notwithstanding, in device which only keeps data for 7 days, the ability to offload data is integral to its usefulness. Google "my vivofit 2 won't sync" and you will see this is a big issue.  And yet this has been going of for months and Garmin has done nothing (try to get customer service for a Garmin GPS and you will understand the Garmin culture).  IT is very apparent that Garmin is trying to use a GPS software (Garmin Express) to manage a watch-fitness device that doesn't even have GPS capabilities.  BUY the device and you are stuck with the software.  BEWARE!!
1386085
I am very disappointed. This item didn't last at all.  I lost a huge amount of data that I thought was safely backed up.
1511358
Every three months, I have to format the disks because the hardware can not manage the disks correctly resulting in unrepairable file systems. The fact that it's a RAID array and yet still manages to screw up defeats the purpose of redundancy.

They've tried to replace the device multiple times but with the same results which makes me believe that it's simply a flawed design.

Stay away.
1343963
Received 2 of these cards on a Tuesday by Wednesday they had both already died and became corrupted and taking with it all the data I had transfered to them. Luckily I am not an idiot and have 3 back ups of all my data. Took me hours to transfer my info to these things, Time I will never get back. Thank so much PNY, gave you a shot, never again. Buyer beware big time. Was using an LG G3 phone and Samsung Note 8.0 with these cards.
831420
Very bad product , died in 2 weeks. All the time it was in my phone and suddenly phone said card wasn't working. Lost 70 gb of important datas and amazon gave same item as replacement which i begged them not to send same even if i need to pay more to get better.
997549
I bought this product primarily to hold myself accountable to a schedule and distance, and it works great for the most part.  However, I've lost the data for about 1 out of every 5 runs.  The product is full of bugs and glitches - software glitches, website glitches, iPod glitches.  It is one of the most infuriating things I have ever come across: to get done with a run (after having pushed yourself) to find out that the data you've been using to keep track of your progress has been lost.  I would definitely recommend Garmin or some other brand until Nike can get this technology figured out and sufficiently reliable.
4439858
I bought the 4 TB version and used it for no more than 3 months. Then the LED light turned red.
I tried to reset it as per WD customer services guidance, but that did not solve the problem.
They finally gave up and said it was bad disc and could not even retrieve the file
For a cloud back to fail like that and lose all data show the very low reliability this product has.
3172001
I am a professional developer and wanted to explore plant sensor technology.  I bought this product which one a "design award" but looks can be deceiving.  The software implementation is one of the worst I have ever seen.  The product simply does not work reliably.  Configuration requires hacking the wifi connection, diagnostics are non-existent, and support is slow.  I finally got it to pair up with my wifi router, but when I went to move it, I can't get it to reconnect.  This is when the device is 1 meter from the WIFI router.  Since the device is a NO-OP, I am going to try and return it, or sacrifice it to the teardown gods to crack the case and see what hardware they are using which may lend to some of the interoperability problems with the WIFI.  A product based on WIFI should be easy to troubleshoot, but the software is very limiting.  You also can't get your data back out of their "cloud" app.  I asked them several times if they could provide an API to get my data back from the cloud server with no response.  Don't trust cloud services that don't have open APIs to get your data back.  I paid over a 100 bucks for this thing, I should be able to get my data back.
173139
BOUGHT VIA AMAZON PRIME AFTER DOING SOME RESEARCH. ITS the 32nd DAY TODAY AND IT CRASHED ALL OF SUDDEN!!!
WORKED ON IT YESTERDAY EVENING, SAVED MY IMPORTANT DATA AND NOW THIS MORNING IT WOULDNT BE DETECTED ON MY WORK OR HOME COMPUTERS. EVEN TRIED IT ON MY FRIEND'S MAC, BUT ALAS!

THE CRUEL PART IS THAT IT CONTAINS ALL OF MY SENSITIVE DATA THAT!!! I CANT GET HOLD OF VERBATIM OR AMAZON PERSONNEL. tHIS IS THE WORST PIECE OF PRODUCT I HAVE EVER BOUGHT. THEY TELL YOU THAT YOU CAN SAFELY STORE ALL YOUR DATA IN THIS "TUFF-N-TINY" USB DRIVE,,,, BUT WHAT IF IT JUST EATS UP ALL YOUR INFORMATION AND YOU ARE STUCK IN THE MIDDLE OF NOWHERE!

ABSOLUTELY DISAPPOINTED WITH AMAZON AND VERBATIM. VERY DANGEROUS PRODUCT. I WILL NEVER SUGGEST ANYONE TO BUY IT.
637692
R U kidding?  In this day and age to lose data is unconscienable.  Consumers need to band together and make sure these manufacturers stop selling junk!
2438683
Bought it to use on my smartphone. Seemed like a reasonable choice considering capacity, speed and brand name.
After only several weeks something went wrong and all my data was deleted. Luckily managed to restore most of the data but it is all messy now (folders, filenames, etc.).
Decided to give it another try but agter another week it went bad again and not the phone does not even recognize it.
DO NOT BUY!
1886931
After 20 min it giving wrong data. You trough your money as i did. DO NOT BUY IT. I recomend the Polar H 7
491098
It's sad when the reliability of your backup storage is lower than the system it's backing up. My first unit failed with slow performance as reported by others within about 6 months. Western Digital was very good about replacing the unit. A second unit bought in late 2012 just failed with the same very slow performance. It took a week to back up my computer. When I tried to update the firmware the unit locked. I took the unit apart figuring the disk drive would be fine and could be installed as an internal hard drive. It was and installed fine in my computer. However it had to be reformatted to work so all backup data was lost. Stay away from this product.
1923939
DON"T BUY!!  Unless you want to lose data, pictures, music, movies.  Failed within its first year. Second star is because it was fast but fast doesn't help when it fails and you lose your data.