Nokia HF-35W
removable, built-in speaker, built-in microphone, DSP
Rating: 
Brand history
Speakerphone
Nokia CK-300
stationary, voice dialing, external microphone, connection to car audio system, DSP
Rating:
Nokia Display CK-15W
removable, screen, voice dialing, voice prompts, voice recognition, external microphone, connection to car audio system, DSP
Rating:
Nokia Display CK-600
removable, screen, voice dialing, voice prompts, voice recognition, external microphone, connection to car audio system, DSP
Rating:
Nokia CK-100
stationary, voice dialing, voice prompts, voice recognition, external microphone, connection to car audio system, DSP
Rating: