The LH-300 headset is a super lightweight, single-sided headset for the ultimate in day-long comfort. The LH-300 features high-quality, dynamic earphones with a noise-cancelling microphone with a semi-rigid, fully adjustable boom for precise positioning on right- or left-side. The high-quality wide band dynamic earphones with soft, pliable ear cushions and headband pads offer a better fit, isolation and frequency response.