Amazon currently has one of Anker's best pairs of Bluetooth headphones in its Gold Box Deal of the Day. The SoundBuds Curve are currently on sale for just $18.99, but that price is good today only.
The Anker SoundBuds Curve are one of the company's newest pairs of headphones. These are Bluetooth headphones, but not truly wireless ones. These offer up some great sound, and great battery life lasting around 12.5 hours of playback. That makes these great for using at the gym, or taking on long walks, and even for travel, when you'll be gone for quite a while. These do charge via a micro USB cable, so they are pretty easy to charge back up anyways. These come in various colors, and are a great pair of headphones to pick up, but for under $20, don't expect the audio quality here to blow you away, like something from Sony, Bose or even Beats would, for a much higher price tag.
This item is also eligible for Amazon Prime's free shipping. Which includes free two-day shipping, and pretty cheap next-day shipping if you need it here extra fast. If you are not an Amazon Prime member yet, you can sign up for a free trial of Amazon Prime by hitting the link below. You'll get 30 days free (if you're a student, you get 6 months), and then it's $99/year. Prime members do get a whole lot more than just free shipping though, so be sure to check out the full benefits.