As a cheap techy present...
...people have been buying them as gifts without checking whether the person actually wants/needs them in the first place. i wonder how many will remain unused, gathering dust ... there is one in my house that will, and Amazon have been handed a damning e-mail to tell them exactly why ... it's useless. Can't handle PDF's with any grace, the buttons are too close together (especially to, "nudge" display contents) ... and other stuff.
Waste of money. I'd have been happier with a box of tights.