HaiTeng B2C via Amazon offers the Cowin DiDa WiFi Portable Bluetooth Speaker in Black for $99.98. Coupon code "SSBNRRFN" cuts it to $59.99. With free shipping, that's tied with our mention from a month ago and the lowest price we could find by $65. It features dual 7.5-watt acoustic drivers, a 50Hz to 20KHz frequency response, microphone, built-in WiFi, voice control via Amazon's Alexa, remote access via the free Cowin app, 3.5mm auxiliary port, and built-in rechargeable battery with up to nine hours of music per charge. Deal ends August 31.