Plantronics Calisto 610 USB Standard Version Speakerphone : Amazon.co.uk: Computers & Accessories
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Plantronics Calisto 5200 Rechargeable Speaker - Smartphone (3.5mm) and PC, Charger | Compatible with Skype for Business, Jabber, USB Deskphones, RingCentral - Global Teck
Black Plantronics Calisto P3200 USB-A, Speaker, 226 G