Nkomax via Amazon offers the CCK KS Parkour Wireless Bluetooth In-Ear Headphones in Black for $19.99. Coupon code "EYGIJLIG" cuts it to $11.99. Plus, Prime members bag free shipping. That's the lowest price we could find now by $2, although we saw them for $2 less a month ago. Features include a 20Hz to 20kHz frequency response, Bluetooth 4.1, microphone, DSP intelligent noise reduction, IPX5 water resistance, three sizes of ear tips, and rechargeable battery with up to 8 hours of music per charge.