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Looks like an Amazon Echo, sounds bigger than it looks: the Sbode M400 is a waterproof Bluetooth speaker with woofers on both ends.
I really like checking out Bluetooth speakers. The Sbode M400 has an FM radio and is IPX6 waterproof, so it should be resilient outdoors. It even comes in a box with a magnetic door. The M400 shows as unavailable now, so the button goes to the Anker Soundcore 2, a current waterproof Bluetooth speaker on Amazon. Here’s how the M400 did.
- Gets loud for its compact size
- Woofers on both ends
- IPX6 water resistance
- FM radio and SD card slot
- Rubber body and lanyard for outdoor use
- Long aux and micro USB cables included
- Sound is louder from one side, so lay it down
- I didn’t test heavy bass tracks
- The M400 is no longer available
▶ Watch the full review on YouTube
Unboxing
The box has a magnetic door. Inside: a manual, a pretty long 3.5 mm aux cord and a nice flat, long micro USB charging cable. The speaker looks a whole lot like an Amazon Echo in overall shape and color.

Design
The Sbode logo is on top, which turns out to be a woofer, and there’s another woofer on the other end. It reminded me of my old Boom Tube jam box, which had subwoofers on both ends. The body is rubber, not soft-touch plastic, with a metal ring in the middle, and the mid-range speakers seem to be under the nylon cloth.
Up top there’s a shoestring-style lanyard tied through a notch, so you can carry it on your wrist.

Buttons and ports
There’s a power button, a call button, a Bluetooth pairing button, play/pause, and volume up/down that double as skip forward and back. A rubber door covers the aux input, micro USB and an SD card slot with a nice flush fit.

How it sounds
It powered on in Bluetooth mode and paired to my iPad Mini as M400 right away. I played “Hail to the Victors” (no royalty issues), and the volume controls worked. Sound quality seemed pretty good.
It gets pretty loud, which makes sense with speakers in the middle and on the ends. I’d lay it down rather than stand it on end, because standing it up blocks one of the end speakers, and it seemed louder from the side opposite the control panel. For its compact size, you get a lot of sound: great for an outdoor party, a fishing boat or the campsite.

FAQ
Is the Sbode M400 waterproof?
It’s rated IPX6.
Does the Sbode M400 have an FM radio?
Yes, plus aux in and an SD card slot.
How loud is it?
Pretty loud for its size.
Should it stand up or lie down?
I’d lay it down so you don’t block an end speaker.
Is the M400 still sold?
It shows as unavailable; the Anker Soundcore 2 is a current waterproof alternative.
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