The SH 230 IP Monaural Wideband Headset from Sennheiser is a single-sided headset designed to deliver warm and natural HD sound for increased voice clarity, accented speaker recognition, and reduced echo. The SH 230 IP can be used for VoIP communication via softphones on PCs / MacBooks and IP desk phones. The 300� adjustable boom allows the microphone to be positioned accurately to achieve optimal speech clarity. The ActiveGard technology is designed to protect you from acoustic shock and in the event of sudden sound surges. The headset is lightweight at 2.3 oz, which allows for wearing comfort during long calls in offices and other professional environments. The SH 230 IP also features a foam ear pad that channels sound for increased speech quality. A carry bag, a cable/clothing clip, and a microphone windscreen are included.