Advanced voice tube quality for clear, natural sound. Sleek, lightweight design is stylish and unobtrusive for a look you'll love. Rugged boom turret provides superior durability and reliability. Full-size foam ear cushions ensure all-day comfort for extended use. Amplifier (GNNGN8000MPA/GNNGN8210), sold separately, is required for operation. PeakStop™ technology protects against sudden, loud sound spikes.