Battery	The device can last for a maximum of 14 days. Heart rate monitoring is always on, HUAWEI TruSleep™ is off at night, 30 minutes of workouts per week, message notifications is on (including 50 messages, 6 calls, and 3 alarms per day), and screen turns on 200 times per day. The device can last for up to 9 days under typical usage. Heart rate monitoring is always on, HUAWEI TruSleep™ is on at night, automatic SpO2 monitoring and stress detection are enabled, 60 minutes of workouts per week, message notifications is on (including 50 messages, 6 calls, and 3 alarms per day), and screen turns on 500 times per day. The device can last for up to 3 days when AOD is on. AOD is on, heart rate monitoring is always on, HUAWEI TruSleep™ is on at night, automatic SpO2 monitoring and stress detection are enabled, 60 minutes of workouts per week, message notifications is on (including 50 messages, 6 calls, and 3 alarms per day), and screen turns on 500 times per day. *Data comes from HUAWEI labs. Actual usage may vary depending on the specific product, usage habits, and environmental factors.
Colour	Black
Compatibility	Android 8.0 or later iOS 13.0 or later
Connectivity	2.4 GHz, BT 5.0, and BLE
Product Type	Huawei Band 9
Sensors	9-axis IMU sensor (Accelerometer sensor, Gyroscope sensor, Magnetometer sensor) Optical heart rate sensor Ambient light sensor
Warranty	12M
Weight	Approximately 14 g (without the strap)