As one of its daily deals, Tech Woot offers the Sennheiser HD 439 Around-The-Ear Portable Headphones, model no. 504765, for $39.99 plus $5 for shipping. That's the lowest total price we could find by $27, although we saw them for $5 less two weeks ago. They feature 5" and 118" single-sided detachable OFC cables, 32-ohm impedance, and 17Hz to 22.5KHz frequency response. Deal ends today.