Design wise, the WONDERBOOM looks a lot like the UE Boom 2, but it's half as tall and a bit thicker. It's 10.2cm tall with a diameter of 9.4cm, while the UE Boom 2 is 18cm tall with a diameter of 6.5cm.
The front of the WONDERBOOM features the iconic Ultimate Ears volume control buttons, denoted by a "+" and a "-", and at the top, there's a power button and a Bluetooth button for pairing the WONDERBOOM to an iPhone. A UE button, also at the top of the speaker, pauses and unpauses music that's playing. A double tap on the UE button will skip to the next song.
The WONDERBOOM connects to a device through a standard Bluetooth connection and it is designed to maintain its connection up to 100 feet away.
All of the Ultimate Ears products offer surprisingly great sound for both their size and price point, and the WONDERBOOM is no exception. In our testing, it wasn't far off from the sound of the UE Boom 2 and it was louder and carried more than the sound from a UE Roll. Sound was clear, even at high volume, and the bass was impressive for a small speaker.
Two WONDERBOOMs can be paired together (a long press on the UE button puts them into pairing mode) for larger spaces and louder sound, and there's also a feature that allows two Bluetooth devices to connect to WONDERBOOM so multiple people can control the music.
A loop on the back of the WONDERBOOM allows it to hang anywhere, and it's also waterproof (IPX7) and able to float, making it ideal for use at the pool, the beach, or in the bath. It can withstand immersion in up to one meter of water for 30 minutes. It's also rugged, making it an ideal outdoor speaker -- it's drop proof from up to five feet.
WONDERBOOM charges using an included micro-USB cable, and it offers 10 hours of battery life per charge, long enough to last for a full day.
WONDERBOOM is priced at $99 and it is available in six colors: Stone (gray), Phantom (black), Fireball (red), SubZero (blue), Cashmere (pink), and Lilac (light purple). Ultimate Ears will begin selling the WONDERBOOM on its website in April of 2017.