SENNHEISER 506048 Sennheiser 506048 Sp10 Usb Speakerphone Lync - Tw9093-im - General Voice Clarity and echo cancelling for a natural speaking and listening experience  Sound - enhancement profile for multimedia and music Mute button, call and volume control and easy cable management for plug and play  Up to 20 hrs. of talk time Certified for Skype for Business  Connect directly to PC/softphone