VXI 202771 Passport 21V-DC Binaural Single-Wire Headset: * 2 speakers to help block out distractions * Noise-canceling boom microphone swivels 300 degrees and filters out unwanted background noise * Kink-free, highly flexible gooseneck boom * High-quality speakers * Durable construction * Built-in hearing protection * Compatible with headset-ready phones (no amplifier needed) and VXI V-series amplifiers and direct connect cords