I bought the JBL Go 3 on 31/8/2022, so I haven't had it for a long time to talk about durability over time and battery life issues, nor has it presented any problems.
So let's get to the point, starting with the basics: The JBL Go 3 is a fantastic, affordable, and small speaker for listening to your music, as well as watching movies, videos, and more. Just like the first JBL Go, the purpose of the speaker is to provide the best, loudest, and cleanest sound possible in this size, and I can safely say that once again, JBL has achieved its goal!
The JBL Go 3 is an excellent speaker for its size: Very clear vocals and mids, sufficient bass (which is greatly aided by the oval passive radiator it has), and clear highs. Unfortunately, in songs with many instruments and at high volumes, it loses a bit of its clarity (in terms of being able to distinguish which instrument is playing), but if you're not an audiophile, I don't think it will matter much to you. In terms of volume, I would say it has a pretty powerful sound for 4.2W. As for the battery, it clearly lasts longer than the Go (from personal experience) and the Go 2 (according to JBL's claims), and it charges at 5V and 1A through the USB Type-C port next to the strap/hook that the speaker has. Here, I want to emphasize that it comes with a JBL USB Type-C cable, but it would be good to use a good aftermarket cable since several users have reported that the cable provided in the package has caused damage to the speaker (in the photo, I have one from IKEA).
The speaker is also waterproof, according to JBL (something being waterproof doesn't mean you can throw it in your bathtub or pool, forget about that). This gives you peace of mind if you use the speaker and it falls into water or if you spill water on it. I want to emphasize something here: If you get the speaker wet and want to charge it, it would be good to wait for it to dry and have no moisture in the charging port, otherwise, you will damage it.
JBL also has an app for its speakers, but this one doesn't work with it, nor does it connect to other speakers to play together.
So far, I have nothing negative to point out, except for a few things that I expected to be better:
1) There is no way to know the battery percentage. The only thing you know is that if the light is red, it needs to be charged.
2) The speaker's Rubber Feet can move around when playing bass, so be careful with that. Also, users have reported that the rubber feet can come off or easily break, so pay attention to that.
3) Removal of the 3.5mm Jack. Personally, it doesn't bother me and I don't care about it at all, as I rarely or never used it on the previous JBL Go I had. I'm just mentioning it here so that people know.
4) Something very minor, it may bother some people, maybe not: When you turn the speaker to maximum volume, it makes a sound and cuts off the music for 1-2 seconds. It doesn't bother me, but I mention it so you know.
So, in conclusion, it is an amazing speaker and perfect in terms of portability! It is a definite upgrade from previous models, and I believe it is worth the purchase, especially at the price it currently has! If I discover something new or encounter any issues, I will update the review (although it is very difficult, as based on my experience with other JBL speakers, they are black dogs).
So, happy shopping and happy listening!