LightInTheBox offers the Xiaomi Mini Square Box Wireless Bluetooth Portable Speaker in Black for $15.89. Coupon code "MISPEAKER" drops that to $13.89. With free shipping, that's the lowest price we could find by $14. It features a metal casing, Bluetooth 4.0, and 2-way audio.Note: This item ships from China and is expected to take up to four weeks to arrive. Uncheck "Add Shipping Insurance to your order" during checkout to remove the 69-cent fee.