Lenovo offers its Lenovo W770 Wireless Headset, model no. 0B65782, for $49.99. Coupon code "USP1NO445782" drops it to $19.99. With free shipping, that's the lowest total price we could find by $15, although we saw it for a buck less in August. It features a 40mm drive unit, 2.4GHz audio transmission, and hidden microphone.