Ocean Technology via Amazon offers the Unitek Bluetooth 4.0 Portable Wireless Speaker, model no. Y-B102, for $59.99. Coupon code "DE237TLH" drops it to $39.59. With free shipping, that's $10 under our November mention, $61 off list, and the lowest total price we could find. Features include a 4,000mAh rechargeable battery, two acoustic drivers, two passive subwoofers, and microphone.