Best Buy has Sony's XB40 portable Bluetooth speaker on sale for just $99.99. This is the lowest price we've seen on this speaker, which has an average price much nearer $200. This is a limited-time deal of the day, so you don't have long to make the most of it.

Light show

Sony XB40 portable Bluetooth speaker

Create a party atmosphere with the light effects and thumping sound of the Sony XB40. It's down to $99.99 — the lowest we've seen it go — for one day only.

$99.99 $200 $100 off

This speaker supports LDAC high-resolution audio, has Bluetooth for streaming from your mobile device, and NFC for one-touch pairing. As a portable speaker with a rechargeable battery, it can play music for up to 24 hours on a full charge. It's water-resistant and has a built-in microphone for hands-free calls. Enhance the party with flashing colored lights and the Extra Bass mode. You can even connect two of these speakers together for room-filling stereo sound. Buyers at Amazon give the XB40 4.3 stars based on over 160 reviews.

This post may contain affiliate links. See our disclosure policy for more details.