I didn't wear headphones when I bought them, and I didn't use them. I went out to work after I bought them. Later, when I used them, there was no sound. I had to go so far to find the seller, so I had to swallow my pride. No wonder I didn't wear headphones. I sold a disordered machine. It's really wicked. Anyway, I think the quality is not good enough. It's not as good as the Samsung mobile phone I used before. If I have a good conscience, the quality should be better at every step,My wife has used Bubugao for many years, but there is no quality problem,
