Audio&Tech via Amazon offers the Meidong QQChocolate Portable Wireless Bluetooth Speaker, model no. QQ4, for $29.99. Coupon code "UB49FW9Q" drops it to $19.88. Plus, Prime members bag free shipping. That's $3 under our mention from a month ago and the lowest price we could find now by $14. This water-resistant speaker features Bluetooth 4.1 with up to a 30-foot range, 10-watt dual drivers, a built-in microphone, 3.5mm auxiliary port, TF card slot, and built-in rechargeable battery with up to 10 hours of play-time per charge.