An increased, 325 foot wireless range gives users the freedom to take calls from nearly anywhere within office environments. High-definition, wideband IP audio provides clear, peak-free sound and superb telephonic clarity. Noise-canceling microphone and enhanced built-in wind screen eliminate distracting ambient sounds, sibilance and boominess. Secure, digital encryption keeps confidential conversations private. Nine hours of talk time on a single charge ensures uninterrupted performance during the average working day. Simple, intuitive controls make operation effortless. Headset Type: Monaural; Headset Style: Convertible; Earpiece Type: Cushioned; Earpiece Material: Foam.