Huawei Watch 4 46mm - Black

5 ATM water-resistant
xDevices complying with the 5 ATM-rated water have a water resistance rating of 50 meters under ISO standard 22810:2010. This means that they may be used for shallow-water activities like swimming in a pool or ocean. However, they should not be used for scuba diving, waterskiing, or other activities involving high-velocity water or submersion below shallow depth.

Battery Life
14-day battery life for maximum usage
8-day battery life for regular usage
4-day battery life with Always On Display enabled
The battery can last for 14 days given the following usage habits:
30 minutes of Bluetooth calling per week, 30 minutes of audio playback per week, heart rate monitoring enabled, HUAWEI TruSleep enabled at night, 90 minutes of workouts per week (GPS enabled), message notifications enabled (50 SMS messages, 6 calls, and 3 alarms a day), and screen turned on 200 times per day. Actual battery life may vary depending on usage habits.

The battery can last for 8 days given the following usage habits:
30 minutes of Bluetooth calling per week, 30 minutes of audio playback per week, heart rate monitoring enabled, HUAWEI TruSleep enabled at night, stress monitoring enabled, pulse wave arrhythmia analysis and sleep breathing awareness features enabled, 180 minutes of workouts per week (GPS enabled), message notifications enabled (50 SMS messages, 6 calls, and 3 alarms a day), and screen turned on 30 minutes a day. Actual battery life may vary depending on usage habits.

The battery can last for 4 days given the following usage habits:
Always On Display is enabled, 30 minutes of Bluetooth calling per week, 30 minutes of audio playback per week, heart rate monitoring enabled, HUAWEI TruSleep enabled at night, stress monitoring enabled, pulse wave arrhythmia analysis and sleep breathing awareness features enabled, 180 minutes of workouts per week (GPS enabled), message notifications enabled (50 SMS messages, 6 calls, and 3 alarms a day), and screen turned on 30 minutes a day. Actual battery life may vary depending on usage habits.

Charging Port
Wireless charging

Display
Size
1.43 inches AMOLED color screen

Resolution
466 466 pixels, PPI 326

Wrist Size
140-210 mm

Watch Case
Stainless Steel

Sensors
Accelerometer sensor
Gyroscope sensor
Magnetometer sensor
Optical heart rate sensor
Barometer sensor
Temperature sensor

Button
Home Button (Rotating Crown) and Side Button

System Requirements
Android 8.0 or later
iOS 13.0 or later

Connectivity
NFC
Supported
Bluetooth
2.4 GHz, supports BT5.2 and BR + BLE

Microphone
Supported

Charging
Charger Voltage and Current Requirements
5V-9V DC/2A