Rokform G-ROK Wireless Golf Speaker – Portable Magnetic, IPX7 Waterproof, Shockproof & Dustproof, Loud Clear Sound, 24-Hour Battery, Rugged Outdoor Golf Cart Speaker (Black) – Perfect for Golf, Camping & Outdoor Adventures

I'll start with a little TL:DR first in case people just want the pros and cons instead of reading a long review...Pros:1. Super strong magnets (guaranteed they are stronger than you expect).2. Extremely rugged design keeps you from worrying about whether or not you need a case for it.3. The speaker gets extremely loud.4. Waterproof latch for the interface is better than any others I've come across.5. Has a micro SD slot in case you go out where you can't stream music.Cons:1. Low end leaves you wanting more.2. No app to allow you to mess with the EQ.This is actually much better than I expected! I bought this to replace an older Oontz bluetooth speaker that I had for awhile. The speaker still worked but it didn't really hold a charge that well anymore and when I was out on course it would cut in and out a bit. I chose to go with this speaker over buying a new Oontz (which I actually loved) because I didn't want to have to deal with a strap or anything in order to clip it on to a golf cart and this speaker looked like it was a lot more rugged. After opening the package the first two things I did was test the magnet strength and test the speaker itself. The magnet is a huge pro on this speaker, I have a computer desk I built and the legs are made out of welded 2" square steel tubing. I didn't expect the magnets to be all the strong so I went to place it against my desk leg to test it, as soon as I got it close the magnets ripped the speaker out of my hand and attached to my desk leg. That was good on its own but the surprise came when I tried to pull it back off. With the amount of force I had to use to pull it off, I don't care how bumpy the paths, fairways, or roughs are at your local course, they aren't knocking this thing free.Sound is where a lot of people are going to be concerned probably. This thing gets super loud, so loud that I actually didn't even test it above 50% volume. There's no distortion with how loud it's getting and unless your course is saying cart path only and you happen to hit it on the other side of the fairway, you're not having a problem hearing your music through this. There's only one downside but it's definitely not enough to take away a star, the low end is a bit lacking. I usually pride myself on having very good audio and I usually like my audio equipment to have a pretty flat response curve that way I can use whatever EQ I have in order to change it up the way I like it. This has extremely crispy highs, above average mids, but the lows are where it starts to fall off. I doubt this would be an issue for me out on course though.The other did huge pros for me that were completely unexpected and though small, are pretty big creature comfort things are the door for the outlets and the micro SD reader that I didn't know was on this speaker. The waterproof door that covers the AUX port, the charging port, and the micro SD reader shuts with a satisfying click letting you know that it is truly shut. It also is a bit hard to open, which with something like this, is a very good thing. You know that it's not just going to pop itself open randomly. As far as the micro SD reader, this wasn't something I was expecting nor it was something I thought I needed but it's definitely something I can see myself using in the future. I tend to try out as many golf courses as I can and that sometimes leads me out into the sticks where I don't have good phone service at all. Well it's a bit hard to stream music without service...unless you can just slide an SD card in and call it a day. This may be something that is a once in a blue moon use case, but it shows how much thought went in to this speaker.