VXI 201814 Passport 10V-DC Noise-Canceling Headset: * Monaural design keeps 1 ear free to hear other conversations * Noise-canceling boom microphone swivels 300 degrees and filters out unwanted background noise * Kink-free, highly flexible gooseneck boom * High-quality speaker * Durable construction * Built-in hearing protection * Compatible with headset-ready phones (no amplifier needed) and VXI V-series amplifiers and direct connect cords