VicTsingDirect via Amazon offers the Vtin Magneti Bluetooth 4.1 Circle Headphones in Black for $39.99. Coupon code "NM8JD38O" cuts it to $26.99. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping adds $6.14.) That's $53 off and the lowest total price we could find. They have a 33-foot range and up to 7-hour runtime per charge.

Of note, it's also available in blue for the above price via coupon code "7B4I4LBR".