Cisco Headset 562 - Wireless, Dual, Multibase Station (CP-HS-WL-562-M-US=)
Cisco Headset 561, Wireless Single On- Ear DECT Headset with Multi-Sou – Dealtargets.com
Amazon.com: CISCO Headset 561, Wireless Dual On-Ear DECT Headset with Standard Base for US & Canada, Charcoal, 1-Year Limited Liability Warranty (CP-HS-WL-562-S-US=) : Electronics