Sennheiser SC 660 USB CTRL is a premium dual-sided USB stereo headset for quality-conscious contact center and office professionals requiring outstanding sound performance. Offering Sennheiser voice clarity and ultra-noise canceling microphone, it optimizes speech intelligibility in noisy environments. Designed to manage calls seamlessly through the call control unit, SC 630 USB CTRL delivers great functionality and convenience when connected to a softphone. Stainless steel and brushed aluminum parts create a high-end design that enhances durability. Features include leatherette ear-pads for powerful sound and wearing comfort and ActiveGard acoustic shock prevention. SC 660 USB CTRL is designed for quality-conscious enterprises requiring Sennheiser voice clarity, extreme durability and wearing comfort.