The charge condition is displayed in the screenshots. After 18 minutes, the ears have expelled 50% of their volume. If the ears can only listen for a maximum of an hour, what can be 6 hours of listening? Despite the benefits, this fact about batteries is quite irritating. Even if the sound "improvers" are turned off, it still doesn't make logic to spend $14k for headphones when you can get subpar models for around $6k.
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