Crystal Clear Call With advanced noise-cancelling microphone, Wantek USB headset is to eliminate background noise, focus on every word and deliver a truly clear, natural and rich audio for calling even in noisy environment. All Day Comfort Weighs only 1.95oz/55g. Ultra lightweight PC headset brings no burden to your head and ear. Super soft high quality leatherette ear cushion and Rotatable Earpiece enhance long-time wearing comfort.. Left & Right Ear 330° rotatable mic enable you to wear on either the left or right side, and you can adjust it freely for the best voice pickup. Single-Sided Business Computer headset is ideal for users who prefer to open ear to your surroundings on desktop calls.