Undocumented function: connected headphones automatically turn off after 30 minutes of silence and do not eat batteries. There is no mention of this in the documentation. After turning off, they need to be turned on with buttons or put into a case. A very useful feature for those who like to fall asleep under relaxation. Overall conclusion: JBL managers and designers got lazy and lost their fear. It's time to cheer them up or replace them. Headphones COULD be made more comfortable and aesthetic for the same money. You don't need much intelligence. But JBL didn't. Next time I will study JBL products more meticulously.
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