Lenovo offers the Lenovo W770B Wireless Headset, model no. 0B65782, for $49.99. Coupon code "USP1SP145782" cuts it to $18.99. With free shipping, that's the lowest total price we could find by $5, although we did see it for $5 less four weeks ago. This headset features a 40mm drive unit, 2.4GHz audio transmission, and hidden microphone. Deal ends September 3.