It's too hard and too unreliable
343186
Just as many others have commented here, this product works sometimes and not others.  After I fully charge it, it works once on my iPhone.  Even though it shows three LEDs (50-75% charged) after that, it won't do another charge on my phone.  I have to fully charge it to 4 LEDs to get that to work.

Although I read in the reviews that it won't fully charge an iPad, I have yet to get it to even try to boost the charge level on my iPad.  I plug a fully charged Jackery Mini into the iPad and nothing happens.  (Yes, I hold down the power button a few seconds just as instructed.)

While there may be some obscure undocumented methods to get around these product shortcomings, it's not worth it to me to discover them on my own.  I'm sending it back.
922448
To much trouble for me to really try.  There are so many things I can;t get and not enough time to do this in.
4368858
Challenging to complete, I could barely do the easy ones
4687657
This devise is extremely unreliable.  The Instruction manual that came with it was not representative as to how to install  it.  I had to call them and they walked me thru it.  I have suffered with it for 4 years  At first it would occasionally respond to an attempt to print with "Server Does Not Exist."  A call to their Tech Support would get me people would walk me thru a cryptic procedure that would get it working again.  Their website does not post this information.

I have probably had to cal them 10 to 15 times during those years.  When the "Server Does Not Exist" error occurs, I would often get it going again by turning the computer on and off a few times or likewise the Hawking or likewise my WIFI router.  Just as often I had to call them and they would have me drag a laptop, connection cables, the Hawking unit to the location of my WIFI router.  There we would open a software that I could never independently open in my office, and go thru a cryptic series of configuration options.  Sometimes, it would take so long to get going that the laptop was on the verge of running out of batter.

I am now stuck on a weekend, when no tech support is available, and must print shipping labels and invoices.  I have toyed with this thing for yet another wasted hour and can do nothing.  I am going to get another printer for my office and junk this thing.
3658665
It's too heavy and thick, and the fixation on the input is week; it disconnects too easily.
4731046
It's pretty tough, you have to learn how to use the tool, you will fight to get it to work, it works, its ok.  But we ended up buying something else.
3352196
I thought this game was sort of fun, but way too hard, which ruined it for me.  There are songs I had no problem with on the previous releases, but now can barely get 5 stars on just on medium.  Granted, the first couple of venues are normal medium, but by the time you get to the last ones, you're wondering WTH.  I don't see the point in making the game so freaking hard it's almost impossible to play.  I don't know what the creators were thinking of when they decided to make it even more challenging. (As if Fire & Flames wasn't hard enough already.)  I can understand Hard, Expert, and Expert+ being crazy, but when Medium is more like Hard, it's ridiculous.  Especially when note layouts are different than the first time the song came out and there's more of them.

I got this game for one song: Play With Me by Extreme, since it's the only one by the band that's been on either Guitar Hero or Rockband.  Overall, I doubt I'll ever graduate to Hard with this pain in the you-know-what, so that really sucks. (Hey, what can I say? I'm not getting any younger and already having arthritis at my age is no picnic.)  If GH games continue like this, I'll probably stick with Rockband because the songs are more playable, character creation is better, and the downloads have been backwards compatible and they haven't robbed me twice for the same song.  I won't be buying anything with the GH logo on it new but instead wait for it to go down in price or find it used.
2783752
I think they've tried to pack too much functionality into this and let someone too close to what really mixing is like write the manual.  The result: a really hard to figure out toy that ends up just being a minimally useable noise maker.  Too bad, good concept.
3897818
This game is good and worth playing but it is frustratingly rudiclously hard. Having some difficulty is good but this game just goes completely overboard and after about the 30th time you die in the same level you just want to quit and never play it again.
4137758
I thought it would be really cool but, it is difficult and sloppy. I was not careful enough and the results show it, sloppy.
4862495
It's already broken but I'm fairly Industrial and hard on things.
4890150
Tricky and finicky little bastard. Spending way too much effort focusing on it not coming apart while grinding then rethreading is awful...
189631
This stuff is so hard, takes a lot of time and effort to get it malliable
841520
This lock has been the bane of my existence for months. I gave it more than one star because it technically works, but every single time I try to unlock it, it feels like I have the wrong key (I don't). This lock has trained me that if I fiddle with it just right, I can unlock it, but there have been many days where it has taken an absurd amount of time to get it loose, and I'm afraid that one day I'll lose my bike to this lock.
4283460
Too hard.  Didn't know the HD meant high density making it harder.
2099148
If you can make it through the tiny, poorly organized, and often cryptic operating instruction booklet you may have a chance to put this to use, but then you may find like I did that it loses functions after several months of use in a very friendly environment. Why they can't make their controls intuitive and their instructions clear is beyond me, this seems to be a problem with all of the products I've used by this company. Expect frustration if you buy this. I'm buying something else.
392185
Yes, it's hard. Too hard, in fact. Like some others, I bought it to replace a Sobakawa, which I shouldn't have. Those are actually heavier and harder pillows, but have more give in them. These are stiff with not much give.

Some nights I really like this pillow, some nights it kills me. I guess I toss and turn a lot and if I'm not directly on this pillow the right way, it really hurts my neck.

It could be right for some people. Not for me.