The SC 260 Binaural Headset with USB & Call Control from Sennheiser is a dual-sided headset which connects to a softphone via a USB. This headset also features an integrated call control unit, and CircleFlex dual-hinge ear cups. The headset's dual-sided design ensures maximum block-out of background noise, increasing concentration and efficiency. The metal reinforced headband is numbered for step-by-step adjustments to ensure a snug fit. This headset's microphone is designed to block out ambient noise and make your voice clearer. The SC 260's pivotable boom rotates through 350° for wearing flexibility on the right or left ear. The boom arm is bendable, which allows you to adjust the microphone's position. The ActiveGard technology is designed to protect you from acoustic shock and in the event of sudden sound surges.