1. Look at the manufacturer of the earphones: Some people, when buying customized earphones , just look at the appearance to choose, ignoring other important information. Unqualified earphones may cause damage to our hearing for a long time;
2. Look at the classification of headphones: earplugs and in-ears are the mainstream in the market. Compared to earbuds, the in-ear fit is secure. There is nothing to say about this, it generally depends on the individual;
3. Look at the price: This mainly depends on the demand for sound quality. If there is no need, you can directly use your own headphones. If there is demand, first look at the brand, then look at the personal budget, what type and unit do you want to buy
4. Look at the usage scenario: If you exercise a lot, it is recommended that Bluetooth is convenient. If you don't like noise, noise reduction is recommended. Daily commuting, you can choose at will
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