Some readers may know that Beethoven, a famous musician, lost his hearing in both ears when he was young, but he did not give up. Instead, he felt the notes through a rope biting in his mouth and continued to create many classic music works. This kind of music that allows Beethoven to still feel when he is deaf is called bone conduction technology (see more《 Different sound bone conduction earphone principle 》）。 After Google released the high-end and grand Google Glass, this technology has received more attention and popularity. In fact, before that, some earphone manufacturers have launched bone conduction earphones. Today's recommendation is AfterShokz AS301, the first generation product from AfterShokz, the first brand of bone conduction earphones, At present, Amazon's price is only 26.99 dollars (about 165 yuan, about 215 yuan from credit cards and forwarding companies), which is the lowest price. For less than 200 yuan, you can feel the bone conduction of tall people. In Sao Nian, do you want to roll your hair?

So, what are the characteristics of bone conduction earphones? Its biggest feature is that it avoids the eardrum and transmits sound directly through skull vibration. When we use bone conduction earphones, we can avoid ear pain and hearing loss caused by long-time vibration of the eardrum. At the same time, we can also detect the sound of the environment. But the disadvantage is that the sound quality of the anterior bone conduction earphones cannot compare with the traditional earphones we use, Until the sound quality of bone conduction earphones has been continuously improved in recent years, bone conduction has gradually shifted from military to civilian use.

Therefore, the most suitable group for bone conduction earphones should be those who have no special requirements for sound quality and often exercise outdoors but want to enjoy music. Because traditional earphones can't hear the outside voice, we can't know the danger at the first time, and bone conduction earphones just solve this problem.

Although it is only a first generation product of AfterShokz, it is enough for most people who just want to listen to music while running. In addition to the addition of an external bag, the second generation product of AfterShokz Sportz M2 has not greatly improved the sound quality, and the first generation product has a higher cost performance ratio. It should be noted that Amazon recently adjusted its free mail policy to raise the free mail standard from $25 to $35, Because this product is too cheap, it is recommended to make up the order or buy it together.