With this over-the-ear wireless headset, you can go mobile and multi-task up to 350 feet from your desk with answer, end and mute controls at your fingertips. Conference in up to three additional headsets for enhanced collaboration. DECT technology provides better audio and eliminates interference from Wi-Fi networks. Advanced wideband audio using CAT-iq technology for high definition voice quality. Noise-canceling microphone reduces background noise interruptions. Enhanced Digital Signal Processing (DSP) provides more natural sounding voice. Use with HL10 Handset Lifter or EHS Cable (both sold separately) for remote call answer/end convenience. Headset Type: Monaural; Headset Style: Over The Ear; Earpiece Type: MiniGel™ Eartips.