Superior Audio Quality Offering PC wideband, noise-canceling microphone and hi-fi stereo sound (C325), the Blackwire 315/325 headsets provide a truly outstanding audio experience – making them ideal for voice, music and multi-media. The Dynamic EQ feature optimizes your voice quality when on calls and automatically adjusts the EQ settings when you're listening to music or multi-media. Comfort & Portability Enjoy the freedom of a secure fit. A lightweight metal headband offers durability and a custom, comfortable fit. Leatherette ear cushions fold flat for easy portability with included carrying case. Dual Connectivity The Blackwire 315/325 headsets connect to your PC and mobile phone – combining the comfort and durability of corded with the freedom and flexibility to connect to your wireless device through a 3.5mm connection. Ideal for knowledge workers who need a solution for managing calls on their PC, mobile phone or tablet. The Blackwire 315/325 headset offers flexibility at an entry-level price point.