By Joseph Green
TL;DR: The Ultimate Ears Wonderboom speaker is on sale for £39.99 on Amazon, saving you 56% on list price.
Portable speakers are great little devices that let you take your favourite tunes with you wherever you go, but they so often let you down when it comes to sound. This is where the Ultimate Ears Wonderboom speaker bucks the trend.
It might be small, but it produces surprisingly big sound. It has a frequency range of 80 Hz to 20 kHz, producing sound that is clear, crisp, and full of big bass. It also has an impressive 10-hour battery life, so you can keep listening all day.
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