Spectralink Bundle 8440 black with standard battery Industry-leading device with VoWLAN function, VQO™ and UC software that enables full integration with all common SIP call control platforms such as Microsoft Skype for Business®, Cisco call servers and others. The 84 Series provides high-quality, secure voice communications to meet the needs of mobile workers in industries such as healthcare, retail, manufacturing and hospitality. 802.11a/b/g/n (Wi-Fi) compatible Direct integration with SIP PBX systems Standards-based VoIP protocol support Standards based QoS Standard, enterprise-grade security options Text messaging support via third party integration Management and configuration via web-based GUI XML-based Application Programming Interface (API) and software developer's kit Lightweight, ergonomic design Resistant to dust, shock and liquid damage User-selectable profiles HD voice and integrated full duplex speakerphone Personal directory, redial and speed-dial lists Icon-based status indicator Audible and vibrating ringers Soft key feature access Standard and extended-life battery options Single, dual, quad and multi charging options Push-to-talk (PTT) mode with 25 channels including one priority override channel Includes standard battery (1520-37214- 001)