Ocean Technology via Amazon offers the Unitek Bluetooth 4.0 Portable Wireless Speaker, model no. Y-B102, for $69.99. Coupon code "XRUGUNY5" drops it to $49.69. With free shipping, that's $51 off list and the lowest total price we could find. Features include a 4,000mAh rechargeable battery, two acoustic drivers, two passive subwoofers, and built-in microphone. Deal ends December 15.