Ugreat via Amazon offers Prime members the Hopday U8 Bluetooth V4.1 Wireless In-Ear Sport Headphones for $19.99. Coupon code "FN6RFVED" cuts it to $9.99. With free shipping, that's $8 less than our August mention and is the lowest price we could find by $25. Features include IPX7 rated water resistance, built-in microphone, CVC6.0 noise cancellation, and up to nine hours talk time. Deal ends January 31.