Compact and portable - lightweight design for mobile UC business professionals. Discrete design - premium styling for discerning users. Outstanding communication - Sennheiser voice clarity and echo cancellation for a natural speech and listening experience. Better audio quality conferencing - replaces PC and mobile speakers and microphones for a superior quality audio experience. Sound-enhancement profile for music and video - enjoy music wherever you are. Exceptional sound - with Sennheiser HD sound quality. Better interaction - dual talk feature allows users to converse naturally and interrupt conversations Optimized for Microsoft Lync - for maximum UC productivity Conferencing across devices - merges PC/softphone and mobile calls into one conference. Plug in and talk - connect to both PC and mobile phone or tablet and you are ready to talk. Intuitive user interface - clear microphone mute button, call and volume control and easy cable management. Hands-free operation - the freedom to call and work Long talk time - up to 20 hours. Visual battery status - via LED indications. Voice prompts for low battery warning - always sufficient talk time. Easy charging - in just 2 1/2 hours via USB cable. Convenience and protection - tailored carry pouch.