Tanga offers the Cambridge SoundWorks OontZ BudZ 2 Wireless Bluetooth In-Ear Sport Headphones in Black for $24.99 with free shipping. That's the lowest price we could find by $9. These water-resistant headphones feature Bluetooth 4.1, an in-line microphone and controls, noise cancellation, and rechargeable battery with up to seven hours of music per charge. They come with three sizes of ear tips and a hard-shell carry case.