Patozon via Amazon offers the Mpow Cobble Bluetooth 4.0 Wireless Headset for $19.99. Coupon code "KQDOX3FU" cuts the price to $15.99. Plus, Prime members qualify for free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, it adds $6.10.) That's $14 off and the lowest total price we could find. It features multi-point technology to connect two devices at once and has a purported talk time of five hours.