Amazon.com: Cyber Acoustics USB Mono AC-840 Headset, Headphone with microphone, Great for Education, Office and Call Centers (AC-840) : Electronics
Andrea Communications C1-1022300-50 (NC-181VM USB) High Quality Digital Monaural Headset - Includes storage bag -Retail Packaging / Dictation / Dictation Microphones - DictationOne.com