Navigation systems; hands-free communication systems comprised of telephones, headset cordless telephones, headsets that allow hands-free use of telephones, microphones that allow hands-free use of telephones, antennas for wireless communications apparatus that allow hands-free use of telephones, desk or car-mounted units incorporating a loudspeaker to allow a telephone handset to be answered hands-free, voice-activated telephones that may be dialed or answered hands-free; stereo equipment co...