Logitech H820e wireless Mono DECT headset and charger via USB port fo, 150,18 €
Amazon.com: Spracht Zum ECO-DECT Pro - UC ECO-Dect 6.0/USB Wireless Low-Emission Headset + Base Station with up to 500 feet of Wireless Range : Office Products
Yealink EHS40 Wireless Headset USB Adapter for Yealink T5 IP Telephon, 49,95 €