Make it your business to hear and be heard with the Plantronics Voyager Focus UC Stereo Bluetooth headset. Move fluidly between PC and smartphone and between work and entertainment with rich. immersive stereo and active noise canceling designed to keep your focus on work. not on the chaos around you.KEY FEATURESA INTUITIVE/USER FRIENDLY FEATURES- Works seamlessly across laptops. Bluetooth-enabled desk phones. mobile phones and tablets- Smart sensors answer calls by simply putting on the headset. mute by taking the headset off and pause/resume music- Enhanced voice alerts announce caller ID. mute and connection status. talk time level- Dynamic Mute Alert feature senses and alerts you when you try to talk when muted- Smart mic boom: wear on either side and maintain locations of R/L stereo and volume/track buttonsGREAT AUDIO ON BOTH SIDES OF THE CALL- Precision tuned triple-mics with enhanced DSP for superior background noise canceling- On-demand active noise cancellation so you can focus