Sennheiser century SC 660 ANC USB is a premium, wired headset with Active noise cancellation (ANC). designed for quality-conscious contact center and office professionals requiring outstanding sound performance, and better noise control to improve productivity in noisy environments. Convenient call handling is provided with Proximity sensor technology that enables answering a call, putting it on hold and resuming the call by just taking the headset on and off. Enhanced audio performance and features like Sennheiser voice clarity and Ultra noise-cancelling microphone deliver outstanding sound for both communication and music. Thick leatherette ear pads help provide passive damping for noise reduction and exceptional wearing comfort during all day use, while Sennheiser activegard technology protects against acoustic shock. All features are packed in a high-quality durable Design with stainless steel and brushed aluminum parts to withstand heavy use. Optimized for UC and Skype for Business certified.