[Fashion Headphones] Many young people like to wear headphones. Whether they are riding a bus or walking, they are used to plugging in headphones. If the headphones are used improperly and over-used, it may take a long time to cause sudden deafness. ————For more information, headset business opportunities, headset purchase, please pay attention to China Headphone Network: [/], welcome to use free trial membership, contact information Feature: Surgery Goggles,Eye Safety Goggles,Best Safety Goggles,Eye Goggles Protection Guangzhou HangDeng Tech Co. Ltd , https://www.hangdengtech.com
Sudden deafness symptoms:
Deafness: The disease is fierce, and hearing loss can occur instantaneously, hours, or days, from mild to total deafness. It can be temporary or permanent. Mostly unilateral, occasionally both sides occur simultaneously or sequentially.
Tinnitus: There are many tinnitus before and after deafness, which usually occurs several hours before the deafness and is mostly snoring. It can last for 1 month or longer. Some patients may emphasize tinnitus and ignore hearing loss.
Vertigo: Many patients will be accompanied by varying degrees of dizziness, nausea, vomiting symptoms, remission after a period of time, not repeated attacks.
Ear blockage: Ear blockage usually precedes deafness, which is one of the hallmark signs of sudden deafness. Patients can be noticeably aware.
Nystagmus: If there is vertigo, there may be spontaneous nystagmus. This kind of situation is rare and the patient is not aware of it. Therefore, be more careful.
Wearing headphones correctly is especially important for protecting your ears. Headphones are generally classified into three types: head-mounted, ear-mounted, and in-ear. The ear damage is the earliest. Compared with the in-ear and ear-hook styles, although the headset does not have the advantages of compactness and portability, it does not need to be worn when worn, so the damage to the ear canal and eardrum is minimal.
In order to avoid the harm caused to the human body by the earphone, when you wear it, pay attention to: Do ​​not open the volume too loud. When listening to music with headphones, you should pay attention to control the volume. It is best to keep it at 40-60 dB (ordinary conversation or slightly smaller). Feel comfortable and pleasing to the ear; do not listen continuously for a long time, adults use the headset no more than 3-4 hours a day, and intermittent listening is appropriate, preferably every half an hour, let the ear rest for a while; pay attention to keep the earplugs clean and timely cleaning In a noisy environment such as a bus, a noisy street, it is best not to wear headphones to listen to music or make phone calls.
1.Material:The parts the wearer touches are not made of materials that can cause skin irritation
2.Structure:Smooth surface, no burr, no acute Angle and other defects that may cause eye and face discomfort.
It has good air permeability.
Adjustable parts and structural parts are easy to adjust and replace.
3.Package:The products are properly packaged and are accompanied by product certificates and instructions
4.fixing band : The minimum width of the headband in contact with the wearer is 11.5mm. The headband is adjustable, soft and durable
5.The appearance quality of the lens: the surface of the lens is smooth and free from scratches, ripples, bubbles, impurities, and other obvious defects that may impair vision
6.Diopter: 0.04D
7.The difference between the prism degrees of the left and right eye lenses: 0.12
8.Visible light transmission ratio: colorless transparent lens 89.35
9.Impact resistance: qualified
10.Protection performance of chemical fog drops: there is no color spot on the test paper within the center of the lens
11.Irritant gas protection performance: there is no color spot on the test paper within the center of the lens
January 06, 2021