Features:
Every Unique Side of You
– Express yourself by giving your device as much personality as you have.
HUAWEI Watch Face Store offers various watch faces in different styles of sports, cartoon, intelligence and hi-technology for your selection. The style changes with your mood.
Easy Charging, Longer Usage
– Free you from different cables and chargers. The built-in USB plug of HUAWEI Band 4 fits in general USB chargers so you charge it anywhere and anytime.2 A single charge powers the band with more than 6 days of usage time.
Oxygen Saturation Detection
– Blood oxygen saturation (SpO2) is one of the important vital signs that can reflect the oxygen supply of the body. HUAWEI Band 4 supports single-time SpO2 level measuring, helping you detect the level of oxygen in the blood whenever and wherever you need.
Smart Heart Rate Tracking
– Thanks to the professional optical devices, processing chips and AI algorithm, the HUAWEI TruSeen™ 3.5 monitors your heart rate with accuracy. It also provides intelligent reminders via vibrations if your heart rate exceeds the maximum average heart rate.5 In the night mode, the invisible light ensures less distraction for your better sleep.
Care For You Better Sleep
– Healthy sleep is the basis for healthy living. HUAWEI TruSleep™ 2.0 tracks your heart rate during sleep to recognize the four phases and analyse the sleep quality. More than identifying 6 types of sleep problems, it also provides suggestions to help you enjoy better sleep.
Life Assistant on Your Wrist
– Notifications of any messages or phone calls, Find My phone, Remote Shutter, all with a touch of your finger to your wrist. Live an efficient life with HUAWEI Band 4.

Tech Specs:
Dimensions:
– Band body (Length x width x height): 56 mm (entire length without the strap) x 18.5 mm (width) x 12.5 mm (thickness of the band body)
– Strap width: 17 mm
– Strap length: 123 mm + 85 mm
Weight
– Approximately 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.
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.
Bluetooth
– Bluetooth frequency: 2.4 GHz
– Bluetooth 4.2
Charging Port
– USB charging port
Microprocessor
– Apollo 3
Environment
– Ambient operating temperature: -10 °C – +45 °C
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.
Storage
– ROM: 384 KB
– ROM: 1 MB
– Flash: 32 MB
Button Control
– Full screen touch + Home key

What’s in the box
1 x HUAWEI Band 4
1 x Quick Start Guide

Brand Huawei
Has GPS No
Warranty 12 months
Materials Silicone
Bezel Size 96 mm
Strap Size 17 mm
Has GLONASS No
is Portable Yes
Screen Size 0.96 in
Model Band 4
Has Altimeter No
Has Music Player No
Has Step Counter Yes
What’s in the box 1 x HUAWEI Band 4
1 x Quick Start Guide
Has Sleep Monitor Yes
Water Resistant Yes
Has Calorie Counter Yes
Has Distance Tracking Yes
Has Heart Rate Monitor Yes
Has Smart Notification Technology Yes
Colour Name Black
Basic Colours Black