Now it’s easy to make & receive Skype calls: Just plug in your Logitech USB (Universal Serial Bus) Headset H330, & you’re ready to go. Digital sound quality. Digital USB (Universal Serial Bus) connection: No hassles—just plug & play to experience digitally enhanced audio & premium sound clarity. Stereo sound: Why stop at Internet calls? Your stereo headset is ready for music & movies, too. Noise-canceling microphone: You won’t have to compete with background noise to be heard. Fit for comfort. Rotating adjustable boom: Allows precise positioning. Microphone rotates out of the way when you don’t need it.. Adjustable, lightweight headband: Provides just the right fit. System Requirements USB (Universal Serial Bus) port (1.1 or 2.0 compatible) Windows 2000, Windows XP, Windows Vista Mac OS X 10.2.8 or later Technical Specifications Cable length: 6.5 feet Connections: USB (Universal Serial Bus) compatible (1.1 & 2.0 Frequency response: Headset: 50 Hz to 15 k Hz Microphone: 100 Hz to 10 k Hz Input sensitivity: -64 d BV/μ Bar -44 d BV/ Pa +/-3 d B