Best portable speaker deal: Save 30% on the Ultimate Ears Wonderboom 4

SAVE $30: As of Feb. 10, the Ultimate Ears Wonderboom 4 is on sale for just $69.99 at Amazon. That's 30% off its list price of $99.99.

Mashable's shopping team has spent quite a bit of time with Ultimate Ears Bluetooth speakers and we're big fans. We love the Hyperboom and Epicboom, but the itty bitty Wonderboom is one of our absolute favorites. If you're in the market for a portable Bluetooth speaker, we highly recommend this tiny powerhouse — especially when it's on sale.

As of Feb. 10, the Ultimate Ears Wonderboom 4 is down to just $69.99 at Amazon. That's 30% off its list price of $99.99 and just 10 bucks shy of its best-ever price from Black Friday.

Our favorite sub-$100 Bluetooth speaker, the Wonderboom 4 fits in the palm of your hand but offers surprisingly balanced and powerful sound. As Shopping Reporter Bethany Allard noted in our roundup, "the sound profile is well-rounded and can get loud."

It can last up to 14 hours on a full charge, handles drops from up to five feet like a champ, and can be submerged in water for up to half an hour. We do wish it offered a companion app to customize the sound profile, but for a ultra-portable no-frills speaker, it's an excellent value.