Roav Bolt Vs. Roav VIVA Vs. Roav VIVA Pro


I know that Roav is an Anker brand. I have some Anker cables and chargers they are good quality. I have seem the Roav products in Wal-Mart and Best Buy, but Ihave no experience with them. Is anybody here using one of these? If so, how well do they work? Is it essentially the voice from Google Maps?

I am just anticipating that it is similar to the Garmin Speak, but have no experience with the Garmin Speak either.