Who knows which brand of bone conduction earphone has good service?

At present, what we know is that bone conduction in South Carolina is better and cost-effective.

Although the purpose of bone conduction earphone is to liberate ears, it has no sound quality in noisy environment, and the sound quality increases exponentially after wearing earplugs, so bone conduction earphone can not expect too high sound quality in its recommended use environment.

Another problem is sound leakage. Generally speaking, people who can hear clearly at a volume of three meters away can get high, and some bone conduction headphones have sucker problems.