The IP protection level consists of English IP and two numbers. The first number represents the dustproof and foreign body intrusion prevention level of electronic products. The second number indicates the tightness of electronic products against moisture and water intrusion. The higher the number, the higher the level, and the stronger the dustproof and waterproof ability. For example, IP68, the first number 6 of IP68 indicates the dust-proof level, which means that the product is completely protected from foreign objects and dust and reaches the dust-proof state. The second number, 8, indicates the waterproof level, which means that the product will not enter the water if it continues to dive at a water depth greater than 1 m.