4.3 inch (480 x 272) capacitive touch screen Android 7.1 OS Optimal HD audio SILK speech codec Yealink Noise Proof Technology Microsoft Skype-tailored user interface Supports Office 365, upgradability of firmware to Teams or SFB edition Hybrid Registration Mode allows users to switch between Teams and SIP for PSTN calling Supports Boss/Admin Common Area Phone on Microsoft Teams Hot desking, BToE 1 USB 2.0 port Bluetooth headset via BT41 USB Dongle EHS40 USB Wireless Headset Adapter Supported Dual-band Wi-Fi with WF50 USB Dongle Supports USB headset from Yealink, Plantronics, Sennheiser Supports YHS33, YHS33-USB, UH33, and UH36 Headsets Dual-port Gigabit Ethernet, PoE support View Teams Contacts in People tab Wall Mountable (with optional bracket)