Huizhou Jinghao Medical Technology CO., Ltd.

Waterproof Level of Hearing Aids

Nano-coating refers to coating a very thin (nano-level) high-tech special material on the hearing aid shell, parts and joints of different parts to provide a protective layer and prevent moisture erosion, which means that the hearing aid is not easy to be attached to liquid. If there are water droplets on the waterproof listening device shell, water will not stay aggregated and will quickly lose. Thus moisture is not easy to penetrate into the hearing aid and moisture-proof is more efficient.

Efficient moisture proof is merely one of the measures to prevent moisture. Please do not put the waterproof listening devices into water or expose them to rain and avoid the erosion of sweat. Still, you’d better pay attention to prevent hearing aids from dampness and use the hearing aids according to the instructions.

The Specific Meaning of IP58 Level of Hearing Aids

First of all, I will explain a concept - IPXX for you all. IPXX level is the national protection standard level. The latter two figures represent the dust protection grade and waterproof grade of this product respectively.

Dust protection grade standard (0-6) is divided into 7 grades of 0-6.

Level 0

It has no protection

It has no special protection for people or things outside

Level 1

It can prevent the invasion of solids larger than 50 mm in diameter

It can prevent the human body from accidentally contacting the internal parts of electrical appliances and prevent the invasion of relatively larger-sized objects.

Level 2

It can prevent the invasion of solids larger than 12.5mm in diameter

It can prevent people's fingers from touching parts inside electrical appliances and prevent the invasion of medium-sized objects.

Level 3

It can prevent the invasion of solids larger than 2.5mm in diameter

It can prevent tools, wires and similar small objects with diameters or thicknesses greater than 2.5mm from intruding into the internal parts of electrical appliances

Level 4

It can prevent the invasion of solids larger than 1.0 mm in diameter

It can prevent tools, wires and similar small foreign objects with diameters or thicknesses greater than 1.0 mm from intruding into the internal parts of electrical appliances.

Level 5

It can prevent foreign objects and dust

Although it can not completely prevent dust intrusion, the amount of dust intrusion will not affect the normal transportation of electrical appliances.

Level 6

It can prevent foreign objects and dust

It can completely prevent foreign objects and dust intrusion


Waterproof grade standard (0-8 grade) is divided into 9 grades of 0-8.

Level 0

It has no protection

Level 1

It can eliminate the harmful effects of vertical droplets.

Level 2

It can protect against droplets falling within 15 degrees from the vertical direction

Level 3

It can eliminate the harmful effects of spray water droplets at 60 degrees in the vertical direction.

Level 4

It can eliminate the harmful effect of splashing water droplets from different directions.

Level 5

It can eliminate the harmful influence of nozzle jet flow in all directions.

Level 6

It can eliminate the harmful effect on the strong jet flow of the nozzle in one direction.

Level 7

The top is 0.15-1 meters away from the water surface for 30 minutes. Its performance is not affected and it does not leak.

Level 8

The top is 1.5-30 meters away from the water surface for 30 minutes. Its performance is not affected and it does not leak.


Welcome to choose waterproof listening devices suitable for you according to the waterproof level of products.

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