Works as advertised. It would be nice if a real charger was included instead of the supplied USB cable for the computer (PC USB 2.0 does not provide enough power and does not charge when the computer goes to sleep). Luckily, I had an old Kindle USB charger lying around that met the required specs, so I could plug it into the wall. The documentation was also missing. I was expecting a green light when fully charged, not amber.