Very good for the price

Not as good as Google or even Apple maps but still a very good choice in countries where you do not want to pay for a data service.
It does have voice commands. It did fine on main routes but when we got on back streets it came up with some odd suggestions.
Note: google and apple map programs will kind of work where you only have a wifi connection before you start out. They will map the rout out, they just can not help when you get off route or want directions to a new place

Bro. Bill F about Navmii Offline GPS Canada