Mi Band 4 (CN) English

Design and display

• 0.95” color AMOLED display
• 120 x 240 pixels
• Screen brightness up to 450 nits
• All-new user interface – smoother and simplified touch screen experience
• Brightness adjustment mode
• 2.5D tempered glass with anti-fingerprint Coating

Battery

• 135mAh battery capacity
• Up to 20 days
• Recharging time ~2hours

Water resistance

• 5 ATM water resistant up to 50m

Activity tracking

• Count steps, distance, calories burned
• 6 workout modes: Treadmill, exercise, outdoor running, cycling, walking, swimming

Health monitoring

• 24/7 Heart rate monitoring
• Heart rate alerts
• Sleep monitoring
• Idle alerts

Sensors

• 3-axis accelerometer
• 3-axis gyroscope
• Capacitive proximity sensor
• Optical heart rate sensor

Connective

• Bluetooth 5.0 (Low energy)
• No NFC for standard version

System requirement

• Android 4.4, iOS 9 and above

Other features

• Stopwatch
• Alarm clock
• Timer
• Find my phone
• Phone unlock
• Event reminder
• Do not disturb mode (works even without phone)
• Lock screen
• Music controls on band

Change, more exciting

• More than 380 new personality expressions

New AMOLED color screen

• Not only the brightness is increased, but the display area is increased by 39.9%.
• Caller ID, watch information, time reminder, instant message display
• The sports coach on the wrist, every move, is accurately identified

Sleep monitoring

• Accurately record sleep information every night
• Data analysis such as deep sleep and low heart rate
• Help you adjust your sleep habits

Bracelet alarm clock

• Smartly wake you up in a light vibration, more comfortable and soft, without disturbing people around you

24-hour heart rate warning

• Ready for busy urbanites
• When the heart rate is too high, the vibration reminds you to pay attention