Huh. Very interesting, Germany. Interesting.
I dont like the obvious "AAA batteries go here" thing...
How much battery power can it need if it uses e-ink and has no illuminated display?
Bluetooth uses a fair bit of battery. Presumably it could be turned off when not required though (i.e. only turned on when transferring a book).
Overall, I was finding it an interesting concept until someone pointed out it was $13
with a phone contract. An £8 eReader is definitely something I could get on board with (I've been considering a Kindle but not sure if I'd use it enough to make it worth the £70), but I don't need or want a phone contract. I could deal with the smaller screen and probably lower build quality etc., but the contract is probably the one deciding factor against it.
On the topic of hacking it, I'm sure at this price there will be some interesting things done for it if it becomes well known enough. For example, I'm fairly confident someone will figure out a way to transfer books from a PC over bluetooth instead of from a phone. (Android apps aren't particularly hard to reverse engineer if you know what you're doing a bit, or it may be easier to sniff the bluetooth communications, I don't really know much about that sort of thing though). Of course, there would probably also have to be some way of converting other ebook formats (e.g. ePub or whatever is used) to whatever format this thing uses (assuming it is not ePub or something standard like that), that would probably be in Calibre territory. Beyond that, I'm not sure what would be done. Perhaps something akin to the Kindle "jailbreaks", allowing custom code to run on the device itself. Maybe bluetooth tethering to a phone to get internet access for downloading RSS feeds or whatever onto the device. (In that regard, it may be beneficial having bluetooth over USB). I guess it all depends how much interest there is in the device.
If it is available without a contract, at a reasonable price, in the UK, I may very well consider getting one. As I said, I have been considering a Kindle, and this is shaping up to be a much cheaper alternative.
EDIT: According to the product site, it has 4GB of storage, which it says is enough for 5 books. I though 4GB would store thousands of eBooks?
Plus it says that the batteries will last for about a year (which I reckon depends on how much you read, they say 12-15 books)
EDIT: It looks like their store may sell books in epub format, so perhaps the device will take books in this format? As I understand, this is a fairly common format, that Calibre can work with quite well? If so, that seems like a good thing.