Small, portable Bluetooth speakers are all the rage these days, and with good reason—they let you share your music with anyone, anytime, anywhere. And some are even waterproof, or at least water-resistant, so you can party next to the pool without worrying that water will dampen the mood by shorting out the speaker.

One interesting model is the Wonderboom 2 from Ultimate Ears. Heck, even the name in intriguing. This little pod promises big sound, so I had to check it out. Sadly, that promise is entirely unfulfilled.

This review is part of TechHive’s coverage of the best Bluetooth speakers, where you’ll find reviews of competing products, plus a buyer’s guide to the features you should consider when shopping.


The roughly cylindrical Wonderboom 2 is small enough to fit in the palm of your hand, measuring a mere 4 inches tall and 3.75 inches in diameter and weighing less than 15 ounces. Most of the unit is covered with an athleisure-inspired, two-tone knit fabric in a variety of color options.

It purports to produce 360-degree sound using two 40mm active drivers and two 46x65mm passive radiators. Ultimate Ears does not disclose the amplifier power or the configuration of drivers and radiators. The frequency range is specified to extend from 75Hz to 20kHz with a maximum output level of 86 dBC; an Outdoor mode increases the maximum level to 87dBC.

Audio input is strictly via Bluetooth using the A2DP profile; there is no physical input at all. Up to two source devices can be connected simultaneously, and you can stream audio from either one at will. Even better, two Wonderboom 2s can be wirelessly linked together for true stereo sound.

A rechargeable lithium-ion battery provides up to 13 hours of playtime. Charging takes up to 2.6 hours using the micro-USB port behind a waterproof cover.

ue wonderboom2 waterproof1 Ultimate Ears

Oops. No worries! The Wonderboom 2 boasts an IP67 rating, which means it’s waterproof, as well as dustproof.

Speaking of waterproofing, the Wonderboom 2 carries an IP67 rating. That means it can survive being immersed up to 3.3 feet in fresh water for up to 30 minutes, and it’s protected from harmful effects of dust. (You can read more about IP codes in this story.) Ultimate Ears also claims it is “drop-proof,” having drop tested it from a height of five feet.

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You can’t miss the volume up and down controls, which are large, brightly colored buttons shaped like “+” and “-“ on the side. Oddly, the “-“ looks like a minus sign only when the unit is lying on its side, in which case it can roll around. Still, I suppose it’s meaning is clear even when it’s upright.



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