Device not charging errors and sync failures.
935022
iPhone chargers about 75% of the time with this cable and will not sync consistently either. They are cheap, but there are similarly priced cable that work 100% of the time.
I bought 3 of these and gave them all away.
2688031
Hub is garbage will not charge controllers headsets or anything else
1863382
I spent the entire day charging this, to find out it does not turn on or charge anything. Am I the only one?
1852328
ANOTHER UPDATE: I no longer have a tablet with NFC. The Bluetooth syncing is problematic. You have to replace the battery often, and doing it yourself is very difficult.

UPDATE: They have reimplemented NFC for the app. Problems 2-6 still exist, but NFC syncing works pretty well. You do have to tap once, wait, then tap again, but that's only a minor problem (see image).

Problems:
1. XX NFC syncing (the best feature) is no longer supported in the latest app XX
2. When the battery runs out in a year, expect problem unless you have Timex do the replacement. The beep or the light may stop working, and this is a common problem. This happened to me, and tech support told me to send it in. Instead, I futzed with it and got it working.
3. Just getting the band on and off is a bear.
4. I bought this so that the time would always be right to the second. However, the watch is always off by ten seconds after a sync.
5. The old version allowed me to have text appear with alarms or appointments. No longer available.
6. BlueTooth only works when the battery is very fresh.
270423
I bought this less than five months ago and already stopped working... error message appears when trying to charge saying "device not supported"...
734593
Did not work out of box after charging as required. Returning product.
30338
This cable does not provide power to the connected device at all.
Cable packaging labelled "Not for device charging - for data sync only".
1826525
I tried TWO different devices. Neither would take the initial charge and go from red to green.
1765490
Had a lot of issues getting a consistent charge out of it. It would work for a time, and then start connecting and disconnecting until I picked the phone up. Never got it to work for a full charge. Mine was a refurb, but regardless, a half hour of testing after reassembly would have uncovered these issues
4706081
is not charging 100%.After 65% is turning  off. Is not working for me:(
3399335
When I plugged the cords in (I tried all three) the device gave a message in the upper right corner  'Not Charging'
2005294
Disappointing problem I have with it is connection via USB cable to sync with Polar Flow. It just stop syncing just after couple weeks of usage. When I change a supple USB cable with another, that work a little better; but still on-off... But both cables recharge battery well. I sync via Ipad now. All other futures work wonderful.

Update
Now no problem with sync, but just suddenly stop recharge.
https://www.youtube.com/watch?v=TWY9dr_pkGQ

Update
I received full refund from seller

I request refund now... :(
1770831
Day One Review: Received this today and so far it has mostly been fine. The unit is undamaged - perfect display and chassis. The charger does not seem to be firmly in place not is it magnetized.

The largest issue is twice the device went blue screen and said it had to be restarted. I was stuck on a BIOS boot screen both times. I had to force shut down the device and restart it.

Attached photos on the unboxing and physical condition.

Update: Suddenly died while charging. Won't reboot or restart, even with hard reset
2540288
I returned this device .. hard to deal with, sync is not working fine and Apple Pay is the solution
782117
3rd Kindle Fire HD with charging and or fail to start issues, the whole line is terribly unreliable.
1418288
The device itself is working well.  I did have a problem syncing it initially.  I had to restart the process 3 times before it finally synced.
4782446
Bought this dock to replace my prior iBolt dock. Connected power to cigarette lighter and 3.5mm jack to aux on stereo. Phone won't go into dock mode or carry sound via cable. I have Dock Page checked under Page Buddy (Galaxy S3 with 4.1.2) and Desk home screen display checked under Accessory (as mentioned in the iBolt's video). The phone does charge. I've tried 3 different power adapters as well as the vehicle's USB port. I emailed iBolt 4 days ago with no response at this time. Will update rating if things change.