Designed with the requirements of mobile workers in the healthcare, retail, hospitality, and manufacturing industries in mind, the Spectralink 84-Series handsets unite the most critical elements of workplace communications within a single mobile device that is highly reliable, extra durable, and easy to use. Wireless VoIP phoneIEEE 802.11a/b/g/n (Wi-Fi)SIPRTCPSRTP multiline BATTERY NOT INCLUDED (Sold Seperately)