Groupon offers the Harman Kardon Onyx Studio 3 Portable Bluetooth Speaker in Blue or Black for $129.99 with free shipping. That's tied with our October mention and the lowest total price we could find by $10. This 60-watt speaker features two 75mm woofers and two 20mm tweeters, a built-in speakerphone and mic, and rechargeable battery. Deal ends December 31.
Note: It may not arrive by Christmas.