Gooloo via Amazon offers its Gooloo Stereo Bluetooth Wireless Speaker in Black for $34.99. Coupon code "6P4JI9CV " drops it to $23.79. With free shipping, that's $4 under our mention from March, $86 off list, and the lowest price we could find. It features Bluetooth 4.1, up to nine hours of playback, and a micro USB charging cable.