Such big sound from a small device! I love that it is so small it becomes very portable. I purchased another device but found it not portable enough. I am using that device for one of our bathrooms and decided to purchase this device for better on the go. I can hang it on my golf bag or on my belt loop for fun rhythmic music while golfing! My buddies love the big sound. Very good on the treble and very sufficient for the bass as well. If you are looking for bass that will vibrate the ground you are standing on, this is not designed for that. The clarity is astounding for this unit. Sound lasts me the whole day! Connected without needing a manual to my Samsung Phone and can also control it through my Watch5 tied with Spotify. Fantastic value for the dollar. I don't expect a whole room stereo, but still it definitely fills the room with sound. I just wanted it for portability. Carabiner and loop is very secure. I purchased this cheaper unit, in case I lose it, although the secure carabiner looks like it will prevent that from happening. The only thing that could be better would be a little more range with my phone while away from unit. It's not bad, though. I am contemplating purchasing another one for true stereo sound, even though that is much more than I am looking for with something like this. I usually use this with activities, so am more focused on that while having music on in the background.

Five stars for lasting a little over 6 years of almost daily use. The sound quality is great for a speaker at this price point that is actually being used in the shower. The only downside is that it's too heavy to be safely held by the suction cup, so you need to be able to place it on the floor or on a shelf.

(I'm dropping this review since I came over here to buy an identical replacement speaker)

I got one of these and was impressed by how well it worked. For a small speaker it packs quite a punch! Obviously it's lacking in bass, but it's not a sub woofer! For the shower it's great!

There seems to be some confusion about using 2 of them together. I read in the instructions that you could link two of them so I got another one. It took a little trial and error to get them to connect to each other but once they are set up they sound awesome! (My instructions for how to connect them at bottom of this review)

I think these speakers are a great buy for the quality and durability. They sound better than expected for being on the smaller side and with two it really helps fill out the space with sound! If you're on the fence about buying one or two… DO IT! You won't be disappointed!

Here's how I got them to pair:
1) Turn on both speakers. (Do NOT pair them to the phone yet!)
2) Make sure the volume is set for both speakers. (This may be automatic, but I made sure the volume was the same for both before pairing to anything, just to be safe.)
3) On ONE of the speakers press the power button TWICE. Press hard, your not going to hurt the speaker. Make sure you double press fairly quickly or it won't take. In a few seconds you will hear a single "beep". That means they are paired together.
4) Pair only ONE speaker to the phone at this time. The Bluetooth signal chain will go from the phone to one speaker, then from that speaker to the other. You can now use both speakers to control volume too!
5) Go to YouTube and find a Right/Left speaker test video to help figure out which speaker is right and which is left.
6) Hang or stick the speakers wherever you want and enjoy!

There you go people! Hope you enjoy your new F4 shower speakers!

I'll be making a video. For in dept detail once I've used it for 6onths or a year and I'll update to include the link, as for now great physical build. Sturdy hard rigid nice. Rubber ish feel but solid.
Has a very competitive design. Typical but not cheap feeling the design goes out of the way to be better with the screw on mounting system.
Most systems fail from wear. The gripping or mounting systems held my force around the speaker or using a rubber string system both break fast in my experience but this threaded bolt is genius.
Hoping it'll hold up. Still reading ? The audio from this speaker is unexpected and awesome. When beats by dre first came out I was blown away years ago and I got the same feel from this Lil speaker haha you would assume I was bias
I played a few things to test it.
Sixteen tons
The riddle by Gigi d'agostino
Ghosts n stuff by deadmouse
president Carter lil wayne

Now I'm using it at work in my maintenance shop as well as on my bike on the mount currently very pleased but I ce only just now bought it got it early and have enjoyed it two days
Checked the microphone by writing this out with the talk to text from three feet from me and I do believe everything is crystal clear no mistakes and no trouble. It's up to you but I think you get your money worth. We will see. And I'll give a update with the video link as well as update on the battery life

: Edit from the future:
Been. I guess six months. I've used it probably ten times but it's not been wet once.
Radio went out in my older car so I put it in there and noticed my Bass is now fuzzy . Ten uses and now the bass is fuzzy? Like busted but only at fully ish volumes .
I have used it to where it's only been charged. Three times …
But it was still a good price perhaps mine is a outlier just a faulty one ? It still sounds good for country and or vocal songs and. Christmas's. Songs but techno and rap. Have the fussy in it

Great sound great price!! BUT DONT BUY THE BLACK ONE BECAUSE YOU CANNOT SEE THE CONTROL BUTTONS!!!!