What is 50-meter water resistance (5ATM)?

5ATM water resistance rating means the device is suitable for shallow water activities such as swimming in a pool or at the beach. It is not suitable for high-humidity and high-temperature environments like saunas, hot springs, or showers. It is also not suitable for high-speed water activities such as diving, surfing, or deep-water activities.
Note:
1. The 50-meter water resistance rating refers to the depth at which the device can withstand water pressure under standard conditions. This standard condition means that the device can handle the pressure of a depth of 50 meters when at rest, not when moving. The rating is calculated based on atmospheric pressure, not actual underwater conditions;
2. Water resistance levels can deteriorate over time with use and are closely related to usage habits.