Hot swappable battery lets you change the battery mid-conversation delivering unlimited talk time One-touch call answer/end/flash, vol+/-, mute from the headset for simple PC call management DECT technology provides better audio; eliminates interference from Wi-Fi networks Advanced wideband audio using CAT-iq technology for high definition voice quality Noise-canceling microphone reduces background noise interruptions, ensuring great audio quality and easing listener fatigue Enhanced Digital Signal Processing (DSP) provides more natural sounding voice Certified for Skype for Business and optimized for Microsoft Lync Talk Time: Up to 13 hours Wireless Range: Up to 300ft Monaural or Binaural: Monaural