Probably a really silly question, but upon searching I couldn't see that it had already been covered.
I understand that the navigator II unit can be used in a car, but I don't understand how it issues vocal instructions. Does the unit have a built in speaker or does it need to be connected to an external speaker and, if so, what do people people use?
Lastly, how on earth do you connect the additional button attachment to the main unit? I can see that two holes on the bottom and back of the main unit line up with lugs on additional button attachment, but are the two units simply forced together or does the security screwdriver come into play?
Cheers, Will
I understand that the navigator II unit can be used in a car, but I don't understand how it issues vocal instructions. Does the unit have a built in speaker or does it need to be connected to an external speaker and, if so, what do people people use?
Lastly, how on earth do you connect the additional button attachment to the main unit? I can see that two holes on the bottom and back of the main unit line up with lugs on additional button attachment, but are the two units simply forced together or does the security screwdriver come into play?
Cheers, Will