Specifically, you need to see the factory information of the Bluetooth headset you bought. There will be an IPXX thing, which is called the dust-proof and waterproof level. Many electronic products and equipment will have it. For details, please refer to the following instructions for selection. In the grade standard, “××” is a two-digit number, the first digit indicates the protection level against solids, and the second digit indicates the protection level against liquids. There are 7 levels of solid protection level, which are represented by 0-6 respectively; there are 9 levels of liquid protection level, which are represented by 0-8 respectively.

Dust level

0: no protection

1: Prevent the intrusion of large solids

2: Prevent the intrusion of medium-sized solids

3: Prevent small solids from entering and intruding

4: Prevent solid objects larger than 1mm from entering

5: Prevent the accumulation of harmful dust

6: completely prevent dust from entering

waterproof level

0: no protection

1: Water droplets will not affect the shell

2: When the shell is tilted to 15 degrees, the water droplets into the shell have no effect

3: Water or rain has no effect from the 60 degree corner to the shell

4: The liquid is splashed into the shell from any direction without harm

5: Rinse with water without any harm

6: Can be used in the cabin environment

7: Can be resistant to immersion in a short time (1m)

8: Long time immersion in water under certain pressure