SoundPeats via Amazon offers the SoundPeats Q9A+ Bluetooth Sport Headphones in Black for $21.99. Coupon code "Y5U8Y4RD" knocks it to $18.99. Plus, Prime members qualify for free shipping. (Non-members can spend $49 to qualify for free shipping; otherwise, shipping adds $6.18.) That's $25 off list and the lowest total price we could find. They feature Bluetooth 4.1 + aptx, support for up to two devices simultaneously, built-in mic, and up to six hours of talk / music time.