TomTop offers the Dodocool Wireless Bluetooth In-Ear Sport Headphones in Black for $15.99 with free shipping. That's the lowest price we could find by $2. These water-resistant headphones feature 10mm drivers, an HD microphone, Bluetooth 4.1, NFC technology, CVC 6.0 noise cancellation, ear tips in three sizes, and rechargeable battery with up to 10 hours of music per charge.

Note: This item ships from China and requires two to five weeks for delivery. The countdown timer on the product page does not reflect an actual expiration time and resets daily.