DESC: Headset with single earpiece headband style delivers superior sound quality, durability and comfort for all-day use. Sound Enhancement System allows you to select bass or treble setting. Quick Disconnect feature lets you walk away from the phone while still wearing the headset, while the noise-canceling microphone improves voice clarity. Features flexible boom, tone control, click-stop headband, adjustable clothing clip. Lightweight at 1.7 oz. Amplifier or adapter required.Soft ear cushions.Enhanced call clarity.Quick Disconnect?.Sound enhancement tone control switch.Premium audio performance; sleek, comfortable styling.Fully adjustable bass and treble controls.