Plantronics W430-M (Certified for Microsoft) Savi Ote MOC Dect 6.0 NA , the first portable PC-based wireless Noise Canceling headset system that incorporates DECT technology for unsurpassed, enterprise-grade audio quality, even in dense working environments. Hands-free functionality increases productivity by enabling users to multitask and move freely around the office (300ft.). Enjoy the best PC audio with the portable Savi 430. Microsoft certified version: Optimized for Microsoft Office Communicator 2007 supporting one-touch call control with Office Communicator. Plantronics