A:AnswerNote that the manufacturer claims the product has been rated IP66.
The first digit being a 6 indicates that it is completely dust-tight.
The second digit being a 6 indicates that it is safe from "powerful water jets" but NOT immersion-proof.
If you need a truly waterproof case, look elsewhere.
IPx7 protects against immersion up to 1 meter for up to 30 minutes.
IPx8 protects against immersion over 1 meter or 30 minutes.