Sony Bm840 Bm-840 Microcassette Transcription Transcriber Machine 2-speeds Sony Model Bm840 BM-840 Micro cassette Microcassette MICROCASSETTE TRANSCRIPTION TRANSCRIBING MACHINE. unit comes with headset (BRAND NEW), footpedal, ac adapter FULL FEATURES INCLUDE: adjustable speed, tone, volume, backspace, counter, speakerphone, plus REW, FF, stop, play, erase buttons. Reset, Auto Stop, Tape Speed (1.2/2.4), speed control buttons