Specifications: * Android 9.0 OS * 4-inch capacitive touch screen * Optimal HD audio, Yealink Noise Proof Technology * Microsoft Teams-tailored user interface * Dedicated Microsoft Teams button * Supports Office 365, and upgradability of device applications to Teams or SFB * Magnet handset * Bluetooth via optional dongle BT41 * Wi-Fi via optional dongle WF50 * 1 USB Type A port, supports USB Headset * Dual-port Gigabit Ethernet, PoE support * Supports Microsoft/Yealink/U2 device management platforms * Hybrid mode (Teams version only)