Linksys Cisco SPA series Compatible VXI Wireless VoIP V150 Bundle with Remote Answering Kit | For Linksys SPA series VoIP phones: 501G, 502G, 504G, 508G, 509G, 512G, 514G, 525G2, 921, 922, 941, 942, 962 Bundle 2 items: Includes VXI Wireless Headset and Remote Answering Kit for Linksys Cisco SPA phones Range up to 300 feet away for maximum mobility Up to 10 hours of talk time - For all day usage and never miss a call Low-cost, affordable, commercial-grade headset - with high quality audio reception Cisco certified and tested. Use this bundle with VoiP phones:501G, 502G, 504G, 508G, 509G, 512G, 514G, 525G2, 921, 922, 941, 942, 962