Microsoft Store offers the Scosche boomCAN Portable Speaker in Black, Silver, Blue, or Red, for $9.97 with free shipping. That's $3 below our mention from two weeks ago and the lowest total price we've seen. (It's a current price low for any color by $2.) It features 35mm drivers and a rechargeable Lithium-ion battery, and includes a USB charging cable and a travel pouch.