The fun advantage of using it as a woofer by attaching it to an object is that the sound volume depends on the material used and whether there are holes drilled in it, and the level of amplification varies accordingly. It's a decent performance for the price. It's a bit difficult to expect excellent sound quality.
Good value for money, but the sound quality is just that of a mid-to-low-end speaker.

Even when placed on a plastic container, it's very easy to hear and sounds great.
It's easy to listen to even if you put it on top of a ramen box.

This is the best surface resonance speaker I know of, and its price/performance ratio is very good.

I bought two, and the TWS works well.
If you turn on both devices at the same time, they will automatically connect after 5 seconds (as stated in the manual).
I don't know what the BT version is, but there is a bit of a delay.
It's better to hear two than one.

A speaker needs a soundboard to produce proper sound.
Glass panels, iron plates, wooden boards (desks), cardboard boxes, etc.
I tested various options, and the paper box produced the most satisfactory sound quality.

But the pros and cons are clear.
A larger resonator plate can produce a louder sound, making it convenient to use outdoors.
The sound quality seems a bit distorted.

It's fine to just use it as a fun speaker.

※ I bought a separate case that fits perfectly.

Arrived quickly, well packaged in the original box. Connects without problems, sound is acceptable if used according to the instructions. Not suitable for regular music listening without setting it up on a flat surface. I want to order a second one for stereo sound.

The size is just right, it's simple, and the sound seems good.

Small, but it perfectly fulfills its function; using it close to the shower screen makes it sound quite good. At maximum volume it distorts a bit, but you can't expect more from something so small.

The speaker is quite satisfactory for the price. The sound is good, with bass present. It's small and fits in a bag. It connects via Bluetooth and charges via USB. A cable is included. I'm satisfied with it. I recommend it.

Imposible at first look, but it plays. Wow

Well product,good bass,thanks to the seller 🥰

Very good speaker, interesting concept, sounds not bad.

They connect effortlessly to the TWS and turn whatever they're standing on into a speaker. This works especially well by the window ... they sound impressive there. 😶

It's a good product if you find the right resonance tube. I like that they also included extra suction cups.

They connect effortlessly to TWS and turn anything they're placed on into a speaker... they sound excellent by the window. 😶

Excellent product 👌 Working perfectly fine. I like this product. Recommended everyone to buy this product from seller. Highly recommended 👌

Its alright the sound is different depending on where you place it, something hollow like a box presents alot of low frequency bass which was surprising for something of this size. On counter tops ot table the sound is so & so nothing earth shattering. I do like it snd its something different so im happy with the purchase. For anyone looking for good sound than i'd look elsewhere

Nice little thing

Cool speaker, I'm an audiophile so I ordered it purely out of curiosity. Plays great, stuck it on the window glass and it's absolutely awesome 👍. However, it didn't stay on the window for long before falling off; maybe it should have been moistened the suction cups for better effect. There's also a second suction cup included + a cord (preferably put somewhere so it doesn't break if it comes off) and a charging cable. It's very small but plays loudly (depending on where you stick it).

This is amazing.
If there's just a box, it makes a loud noise.
Is this not worth ten thousand won?
I would like to purchase it as a gift.
Highly recommended!

Incredible sound, it doesn't seem powerful until it's played close to a box.

Arrived quickly in excellent condition. perfect - cheers!

This was purchased as a gift for a friend who likes to play with sound or do sound experimentations. they were very happy with the gift, it has a very decent sound when choosing the good surface. very interesting sound when used on corrugated plastic signs, tom drums or even cardboard boxes as these define more bass. the suction cups are very small feet and do not really attach well to surfaces, so you need to put it on top of a surface so it doesn't fall off (falls off surface if you put it sideways). i would like to have a 1 large suction cup to put on to see the difference in sound since the quality of the materials in the suction cup(s) and the surface contact modifies the overall output quality. it is fun to play with, not really a listening device since the mid range is a bit lacking and highs are harsh, which is a result of the digital sound quality output rather than quality of the physical components of the product.