The SIP-T58W with camera is an easy-to-use business phone with an enhanced HD audio and video calling experience. 720 p 30 HD video, Optimum HD audio, Yealink Noise Proof Technology, Yealink SDK (Software Development Kit), Intercom, integrated Bluetooth 4.2 and dual-band Wi-Fi 2.4 G/5 G, media and storage applications Opus codec support, up to 16 SIP accounts, up to 3-party video conference, 10-party audio/ /video mixed conferencing (up to two video calls) Dual-port Gigabit Ethernet, PoE support, Supports up to 3 expansion modules EXP50, Supports Yealink/Unify Square Device Management Platform Note: Power supply available separately