New Century headsets offer superb sound in a high-quality durable design. All feature Sennheiser voice clarity and ultra noise-cancelling microphone for an incredibly accurate and clear listening experience. With a comfortable fit that lasts all day and a solid sense of quality, Century is built to sound superb, look stunning and outlast the competition - in even the toughest contact center or office environment. It’s a headset that says you put your people and customers first.Choosing the right Century:SC 635A premium single-sided wired headset for quality-conscious contact center and office professionals requiring outstanding sound performance while maintaining contact with their surroundings.SC 635 USBA premium single-sided wired headset for quality-conscious contact center, office and UC professionals requiring outstanding sound performance while maintaining contact with their surroundings.SC 665A premium double-sided wired headset for quality-conscious contact center and office professionals requiring outstanding sound performance in noisy environments.SC 665 USBA premium double-sided wired headset for quality-conscious contact center, and office and UC professionals requiring outstanding sound performance in noisy environments.'