Patuoxun via Amazon offers Prime members the Mpow Bluetooth 4.0 Foldable Stereo Headphones in Black for $41.99. Coupon code "APTXMPOW" cuts the price to $32.99. With free shipping, that's $47 off list and the lowest total price we could find, although we saw them for a buck less last month. (Non-members can spend $35 or more to qualify for free shipping, otherwise shipping costs $5.37.) They can be paired with two Bluetooth-enabled devices and feature Bluetooth 4.0, volume and playback controls, up to 15 hours of music and talk time, and a foldable design.