A4C offers the factory-refurbished Böhm Bluetooth Headphones
in Black/Silver or Tan/Gold, model no. B-66, for $79.95. Coupon code "DEAL50" cuts it to $39.97
. With free shipping
, that's tied with our February mention as the lowest total price we've seen for a refurb of this model. (It's also $45 below the cost of a new pair.) They feature Bluetooth 4.0, 20Hz to 20kHz frequency range, noise cancellation switch, and up to 18 hours of battery life. A 1-year Böhm warranty applies. Deal ends May 31.