#monaural f s

Wantek Corded Telephone Headset Mono w/Noise Canceling Mic Compatible with ShoreTel Plantronics Polycom Zultys Toshiba NEC Aspire Dterm Nortel Norstar Meridian Packet8 Landline Deskphones

Wantek Corded Telephone Headset Mono w/Noise Canceling Mic for Avaya Aastra Allworx Adtran Alcatel Lucent AltiGen Comdial Digium Gigaset InterTel Mitel Plantronics MiVoice Landline Deskphones