A:Answer Hello,
The nuvi 52LM does not have Voice Command. Devices that have the Voice Command feature allow you to perform actions by just using your speech, such as adjusting the volume, finding places by name, category, intersection, address, along with accessing the Saved Places and Recent locations.
More information including devices that support Voice Command are outlined in the FAQ article below:
http://support.garmin.com/support/searchSupport/simpleCase.htm?caseId={4193cbb0-9ac6-11dd-f60b-000000000000}&kbName=garmin