the little speaker that follows me everywhere

There is a particular sound to a Saigon balcony in the afternoon. Scooters two floors down, someone's aircon dripping onto the pavement, a neighbour's TV through an open window. For years I just let all of it wash over me while I drank my coffee, because the alternative was hauling something fragile and mains-powered out onto a hot tiled balcony and praying it didn't get rained on by an afternoon storm that arrives in about four minutes flat.

What I actually wanted was something small enough to live in my bag, dumb enough that I wouldn't cry if it took a tumble, and loud enough to hear over the street. Not a sound system. Just a speaker I could stop thinking about.

The thing that finally ended the search was the WONDERBOOM 4, a squat little drum of a speaker by Ultimate Ears that I have now carried to two countries and dropped more times than I'll admit. It still works. That alone earned my respect.

Who Actually Needs This

Not everyone. If you want one speaker to fill a room for a dinner party, this is not it, and I'll come back to that. But if your problem is mobility rather than volume, it's almost suspiciously good at the job.

• 🧳 Frequent travellers who want music in the room without packing a brick or hunting for a free plug socket.
• 🚿 People who want sound in the shower or by the pool and have stopped trusting "splashproof" claims.
• 🏡 Anyone who drifts around the house and garden and wants the music to come with them instead of staying put.
• 🎒 Clumsy people. I say this with love. It is built for us.

What It Gets You

Sound that comes out in all directions

It does proper 360-degree sound, which sounds like marketing until you realise the practical upshot is that you stop fussing over which way it points. Plonk it in the middle of a table or on a windowsill and everyone gets roughly the same thing. For a speaker this size, the volume genuinely surprised me the first time. There's an Outdoor Boost button too, a quick tap that retunes it for open air, and on a windy garden afternoon it does pull the music back from getting lost.

A battery that lasts the whole day

Around 14 hours of playtime, which in real terms means I charge it the night before a travel day and don't think about it again until I'm home. It tops up over USB-C, though I'll note the cable isn't in the box, so if you're the sort of household that has lost every USB-C cable you've ever owned, factor that in.

Genuinely rugged, not "rugged" in quotes

It's IP67-rated, so it can sit in a metre of water for half an hour and shrug it off, and it floats. Dustproof as well, which matters more than I expected after a beach day in Vietnam where everything else came home full of sand. It's drop-tested too, and there's a little loop on top to clip it to a bag. Mickey has knocked it off a shelf at least twice with the casual contempt of a 7kg cat, and it carried on playing from the floor.

Two of them, and a podcast mode

Pair two together and you get bigger sound, or press again for true left-and-right stereo. I only own one, so I can't vouch for it personally, but it's there if you catch the bug. There's also a Podcast Mode that retunes for voices, which I was sceptical about until I tried a long episode on it and the speech actually did come through clearer than music settings manage.

💡 Yen's Note
Bluetooth range is rated at 40 metres, and it genuinely reaches. I leave it on the balcony and wander back inside to refill my coffee with my phone still in my pocket, and it doesn't stutter. Small thing, but it's the small things that make you stop resenting a gadget.

The Honest Version

It sits at 4.5 stars across just over 2,300 ratings, which for a speaker is a properly reassuring number. The praise is consistent and it matches my experience: people love how tough it is, how loud it goes for the size, and how little maintenance it asks of you. It's the speaker that gets thrown in a bag and forgotten about, and that's exactly what people seem to want from it.

Now the caveats, because I'd rather you hear them from me. This is a small speaker, and physics is physics. The bass is present and tidy, but it is not deep, and if you mostly listen to music that lives on the low end you'll feel the ceiling. It will not fill a large room or carry a party on its own. Don't buy it expecting either of those things, because it isn't pretending to be them.

The missing charging cable is a mild irritation rather than a real problem, but it's the kind of small meanness that lands worse on a portable thing you're meant to grab and go with. And if you already own a bigger speaker for the house, this won't replace it. It does a different job.

I've stopped thinking of it as a speaker and started thinking of it as a thing that happens to play music wherever I am, which is the highest praise I have for any gadget. It's been to Saigon, sat in a damp British garden, lived in a suitcase, and survived the cat. Chương keeps eyeing the second one for stereo, and I keep pretending I haven't noticed.

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