Lenovo offers its Lenovo P180 Headset with Microphone in Black, model no. 57Y6747, for $19.99. Coupon code "USP1AU346747" cuts it to $6.99. With free shipping, that's tied with our mention from a year ago, $13 off, and the lowest total price we've seen. It features an omni-directional microphone and carrying case. Deal ends August 20.