Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: My headphones are fully charged but they won't turn on.  Why?
Document: I ordered this product with the expectation that I would receive a pair of functional headphones; I was wrong. I got them out of the box and charged them at my computer for a few hours. When this was complete, I attempted to turn them on. I tried everything, but it was to no avail. I just don't understand.
Does the job and sounds decent. I had the same problem as some others where after a time the device would not power on or work even though it was fully charged. Being a techie I messed with it and got it working again by plugging it in while holding some of the buttons. If this happens to you try different button press/hold combinations while plugging it in.
I can chanrge it fully, use for 5 minutes, turn it off, come back tomorrow and the battery is completely dead. And, yes, I'm positive I powered it off. I've done this many times. The result is that I have to charge them every time I want to use them, which means I'm constantly using them while they are plugged into the USB port. What's the point of bluetooth then? I just traded one wire for another...
I've had them for a couple of months and the battery is still great too. I actually used it wisely about every week for a while and I honestly don't remember the last time I charged it and it recently just died out. For good quality, bluetooth headphones that won't break the bank, I'd say this.
I charged them twice in two weeks and I use them almost everyday for hours!- Has it's own carrying bag.Cons:- Charger it comes with only allows to charge via a computer and not an outlet. An iPhone outlet charger works though.- Makes all other headphones you own obsolete!I recommend these for anyone who has a smartphone with Bluetooth capabilities. You'll be thrilled with them!Thanks,Jonathan
Be aware. I just got these yesterday. The item came in was brand new and in good condition. I charged it up and paired it with no issues. I used them for two hours on the train to try them out and they worked flawlessly. I met a friend out and she tried them out. She bought the bose headphones but returned them because she didn't think they were worth the price. She said they sounded just as good as the bose.
This is my first wireless headphone, always thought the bluetooth battery was going to be an issue, but it turned out to be very nice. I use this mostly with my iPhone 4s, and I use it for listening to music at work. I charged the headphone a week ago and I used it everyday, it is still going strong. The quick control on the headphones work well with my iPhone.
This is a good quality Bluetooth headphone, not the world's best ever headphones, but good for listening to music as you move around the house, or if you are working out, without having to turn the speakers on full blast.I got these at the same time as the GG-Solaceair, so how do they compare?
These are great headphones for the price. They need an on/off switch. The manufacturer designed these with too many functions on one button (on/off/redial/hold). If the headphones are paired with the phone, and you try to turn the headphones off, you just keep redialing the last number you called. You pretty much have to turn the phone off first before trying to turn the headphones off. That is a pain.
Update: WARNING!Be wary of these headphones. Another reviewer stated that his headphones stopped turning on. After less than two weeks these things have stopped working. They will take and hold a charge, but they will not turn on. I powered them down as I was getting into my car yesterday morning, and when I tried to power them back on... No response. Nothing at all. Very disappointing.
Answer: You might need to do a hard reset. Plug in your headphones using a powered usb charger or port. While it is plugged in, hold volume - and multifunction button(this is the power button) at the same time. It should reset your headphones. If it does not work, try volume + and multifunction/power  button while headphone is plugged in. Refer to your manual for more info. Hope it helps.