Huawei Band 4 Smart Band, Smart Heart Rate Tracking – Graphite Black

Strap width: 17 mm
Strap length: 123 mm + 85 mm

WEIGHT
Approximqtely 24 g (including the wrist strap)

Product size, product weight, and related specifications are theoretical values only. Actual measurements between individual products may vary. All specifications are subject to the actual product.

COLOUR
Graphite Black, Sakura Pink, Amber Sunrise

DISPLAY
TFT colour screen
Resolution: 80 x 160 pixels
Size: 0.96 inches

MATERIAL
Front cover: Plastic
Strap: Silicone rubber

OPERATING SYSTEM
Android 4.4 or later
iOS 9.0 or later

SENSORS
3-axis acceleration sensor
Infrared wear sensor
Optical heart rate sensor

BATTERY
Capacity: 91 mAh

Charging time: about 1.5 hours (in ambient temperature of under 25 °C)

7 days:
HUAWEI TruSleep™ is enabled, Heart rate monitoring (Smart mode) is enabled, Raise wrist to wake screen is disabled;
8 days:
HUAWEI TruSleep™ is enabled, Heart rate monitoring (Smart mode) is disabled, Raise wrist to wake screen is disabled
9 days:
HUAWEI TruSleep™ is disabled, Heart rate monitoring (Smart mode) is disabled, Raise wrist to wake screen is disabled

Screen is checked briefly 200 times a day, 50 messages a day, 3 calls a day, 3 alarms a day

Data is based on tests results from the Huawei lab. Actual battery life varies depending on your band’s configuration, operations, ambient environment, and how long the battery has been used.

*Typical value. Actual capacity may vary slightly.
This capacity is the nominal battery capacity. The actual battery capacity for each individual phone may be slightly above or below the nominal battery capacity.

CHARGING PORT
USB charging port

WATER RESISTANCE
5ATM

Devices complying with the 5ATM-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.
MICROPROCESSOR
Apollo 3

ENVIRONMENT
Ambient operating temperature: -10 °C – +45 °C

BLUETOOTH
Bluetooth frequency: 2.4 GHz
Bluetooth 4.2

STORAGE
ROM: 384 KB
ROM: 1 MB
Flash: 32 MB