Ocean Technology via Amazon offers the Unitek Aluminum Wireless Bluetooth Portable Speaker in several colors (Space Gray pictured) for $16.99. Coupon code "FJQDKGK4" drops the price to $12.91. Plus, Prime members bag free shipping. That's $47 off list and the lowest price we could find, although we saw it in a single color for $3 less in February. This 3-watt speaker features Bluetooth 2.1 with a 30-foot range, an FM radio, built-in microphone, microSD card slot, aluminum unibody housing, and built-in rechargeable Li-ion battery with up to 3.5 hours of play-time per charge.