Dictaphone 304931 headset adaptor converts a standard 3.5 mm mono or stereo headset to a Dictaphone 2 prong connection. 3.5 mm Female Mono/Stereo to 2 Prong Male 7 inch converter cable Perfect for converting your stereo or mono headset for use with Dictaphone equipment requiring a 2 prong headset. Dictaphone 304931 compatible with: Dictaphone Nuance 0420 C-Phone Digital Desktop Dictation Transcription Station Dictaphone Nuance 0421 C-Phone Digital Desktop Dictation Transcription Station Dictaphone Nuance 0422 C-Phone Digital Desktop Dictation Transcription Station Dictaphone Nuance 0425 C-Phone Digital Desktop Dictation Transcription Station Dictaphone Nuance 1350 Desktop Mini Cassette Dictator Transcriber Dictaphone Nuance 1360 Desktop Mini Cassette Dictator Transcriber Dictaphone Nuance 1709 Exec Talk Desktop Mini Cassette Dictator Transcriber Dictaphone Nuance 1710 Exec Talk Desktop Mini Cassette Dictator Transcriber Dictaphone Nuance 1720 Exec Talk Desktop Mini Cassette Dictator Transcriber Dictaphone Nuance 1740 Express Writer Desktop Mini Cassette Dictator Transcriber Dictaphone Nuance 1750 Express Writer Desktop Mini Cassette Dictator Transcriber Dictaphone Nuance 1870 Desktop Mini Cassette Dictator Dictaphone Nuance 1880 Desktop Mini Cassette Dictator Transcriber Dictaphone Nuance 1890 Desktop Mini Cassette Dictator Transcriber Dictaphone Nuance 2709 Exec Talk Desktop Standard Cassette Transcriber Dictaphone Nuance 2710 Exec Talk Desktop Standard Cassette Dictator Transcriber Dictaphone Nuance 2720 Exec Talk Desktop Standard Cassette Dictator Transcriber Dictaphone Nuance 2730 Exec Talk Desktop Standard Cassette Dictator Transcriber Dictaphone Nuance 2740 Express Writer Desktop Standard Cassette Dictator Transcriber Dictaphone Nuance 2750 Express Writer Desktop Standard Cassette Dictator Transcriber