Bought one, and it didn't work as well as the plain Engenius. So I asked about it, and they said it must be defective and to send it back. Sent it back (at my expense), and they refused to answer my email inquiries after that. I was leaving for Mexico, and didn't have any more time to play with them; finally denied the charge on my credit card and got most of my money back, but never were able to contact them again. And they never even acknowledged the reversed charge request.