Poly Blackwire 3220 Stereo USB-A Headset features PC wideband, noise-canceling mic and Hi-Fi (high-fidelity) stereo sound functions for a quality experience. Dynamic EQ (equalization) optimizes the quality of your voice on calls and automatically adjusts the EQ settings when you want high-quality sound for music or multimedia playback. Hi-Fi stereo style creates a richer, more immersive experience. Use the intuitive inline controls to answer/end calls, control volume and mute to simplify call management. Conveniently placed indicator lights provide helpful, unobtrusive call, mute and volume status. USB-A headset is ideal for managing calls on your PC, mobile device or tablet. Leatherette ear cushions fold flat for easy portability. Lightweight, metal headband offers durability and a custom fit. An IT manager's dream, this headset was created for communication and is optimized and certified to work with top virtual meeting providers.