Harman Kardon offers its refurbished Harman Kardon Omni 10 Plus Wireless Bluetooth Speaker in Black or White for $49.99 with free shipping. That's $20 under our April mention and the lowest price we've seen. (It's $200 under the lowest price we could find for a new unit today.) Buy Now Tips A 1-year Harman Kardon warranty applies. Features Bluetooth & WiFi 52Hz to 20kHz frequency response 90mm woofer & 19mm tweeter Spotify & Chromecast compatibility