On January 13, the topic of "only 2 noise-canceling headphones obtained A-level certification from the Ministry of Industry and Information Technology" was on the hot search.
Xiaoka was consulted on the official website of the National Industrial Information Security Development Research Center and learned that on December 24, the National Industrial Information Security Development Research Center released a report, and the original text of the report showed that a total of 12 headphones were selected to participate in the selection. Finally, the four headphones of TWS NB2, NeoBuds Pro, OPPO Enco Frre2i and OnePlus Buds Pro won the A-level evaluation certificate of anC comprehensive noise reduction level evaluation certificate for the user scenario of smart noise reduction headphone products.
The report shows that nearly 50% of the noise reduction headphones are insufficient, not only can not protect the hearing, but there is a risk of hearing damage, ordinary headphones by adjusting the volume to block the ambient sound interference, it is very likely to cause hearing damage, and active noise reduction headphones through the chip to reduce external noise.
It can be seen that the choice of a nationally certified, compliant, tested high-quality active noise cancellation headphone products can not only improve our use of the feeling, but also responsible for our health, the volume of the headphones should not exceed 60% of the maximum volume, the continuous use of time should not exceed 60 minutes, then the above headphones that have been certified by the Ministry of Industry and Information Technology A are you using?