Patuoxun via Amazon offers the Mpow Bluetooth 4.0 Foldable Stereo Headphones in Black for $41.99. Coupon code "MPOWAPTX" cuts the price to $32.99. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping, otherwise shipping costs $5.37.) That's tied with our April mention, $47 off list, and the lowest total price we could find. 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.