Harman Kardon offers its refurbished Harman Kardon Onyx Studio 4 Bluetooth Speaker in several colors for $99.99 with free shipping. That’s $40 under our July mention of a new one, which also included a Google Home Mini, and the lowest price we’ve seen. (It’s the best we could find for a refurb now by $20.) It features two 75mm woofers, two 20mm tweeters, a microphone with access to Siri and Google Now, and up to eight hours of playback per charge.
Note: A 1-year Harman Kardon warranty applies.