Firstly, the instructions are not properly translated into English. The instructions say "it should work for 3 to 5 days" before it sounds good. I'm not sure what that means? Maybe "it" should be charged for a long time. I will say that I put the headphones in my ear several times, the sound was not bad at all. However, a pod would sometimes come off or fall out of my ear. Don't buy these if you have small ears. Even with the small rubber adjusters, they were still too big. I had to put a bandage on them to keep them from falling out. This made the sound louder or turned it off. The capsules are so sensitive that the slightest touch changes the settings. I fought them seriously. Sometimes I had to turn off all other Bluetooth settings for that connection. As some may know, it takes time to reconnect to a portable car receiver. This product caused more trouble than it was worth.
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