Lenovo offers its Lenovo W870 Headset in Black, model no. 0C53113, for $49.99. Coupon code "USP1AG413113" cuts it to $24.99. With free shipping, that's the lowest total price we could find by $5. It features a frequency response of 20Hz to 20kHz, 360° whole-hide microphone, lithium battery, and up to 15 hours of talk time. Coupon expires August 7.