So I have had them for 9 months now. I bought them because I don't really like cables. I always worried that the sound would be of lower quality due to Bluetooth, since I am an audiophile. Finally, I decided to buy them when I heard the JBL T450BT from a friend. Even though they are stereo headphones, the sound was surround and quite clear for the 45 euros he paid. So I decided to buy a more expensive model for a multiplied experience and to listen louder without distortion.
I will start with the positives first. The battery is excellent, I only charged it about 10 times during this whole period. There is also a cable for wired connection. They are lightweight, comfortable, and foldable for easy transportation. The ear cushions and headband are made of soft and high-quality material. The sound is open, clear, with ideal bass. You feel like the music surrounds you from all directions and you can feel the position of the instruments. Especially if you listen to jazz, you will understand. I tried them wired with the PS4 game "God of War" and my jaw dropped. Lastly, the phone call quality is as clear as ever, you can speak comfortably without shouting or the air obstructing the sound, truly perfect.
Now for the negatives, the headphones, although sturdy in construction, are almost entirely made of plastic, which can easily get scratched and lose that metallic shine it has, perhaps that's why they provide a case. The sound is clear, but not at the level of the Sennheiser Momentum headphones, which are crystal clear and not only do you hear the sound, but you also feel it, especially with the guitar. They are not compatible with PS4, let's not forget that. The buttons on the headphones are not user-friendly, especially if you wear them, you can't distinguish them. The sound played from your player sounds better in the flat setting without effects. Lastly, after 1 hour of listening, it can tire your ears and head.
For the money and the JBL Pro Audio that gives the surround feeling, I believe you will enjoy them for a very long time for music and movies.