I know I’m a bit late to the party with this, but finding a Navigation controller ain’t easy these early days. In fact, it seems to be a very rare bit of equipment as Sony is apparently distributing it to retail with a ratio of 1 every 40 PlayStation Move Starter Packs. Or something like that, a trusted source told me.
Anyway, I finally managed to get one via online store and promptly put together this video overview of the device.
Enjoy!