Harman Audio offers the factory-refurbished AKG K 840 Wireless Headphones in Black, model no K840KL, for $119.99 with free shipping. That's $19 under our mention from May and the lowest total price we've seen. (It's also $110 under the best price we could find for new ones.) They feature AKG's Kleer technology, allowing 16-bit playback over a 2.4Ghz radio link; a frequency response of 10.5Hz to 31kH; and up to 28 hours of playtime per charge.