A:AnswerNo external antenna needed on our portable navigation devices. When mounted as instructed on the dash with a clear view of the sky, signal is more than sufficient.
A:AnswerNot with its preloaded North American mapping. However, you can purchase and install, City Navigator® Southern Africa NT PART NUMBER 010-D0047-00.
A:AnswerWell I received the unit and guess what? It DOES show MPH in increments of 1/10 when under ten MPH. Come on GARMIN support, you didn't read the question closely enough!