Bluedio via Amazon offers its
Bluedio T4 Turbine Active Noise Cancelling Wireless Bluetooth Headphones in several colors (Black pictured) for $45.99. Coupon code "XQCNRD3E" cuts that price to
$33.11. With
free shipping, that's $47 off and the lowest price we could find. They feature noise cancelling technology, 57mm drivers, detachable 3.5mm cable, and Bluetooth 4.2.