How to measure pressure on Xiaomi fitness bracelet: a detailed guide with nuances

Introduction: Can you trust the pressure measurement on Xiaomi?

Xiaomi fitness bracelets have long ceased to be simple pedometers — modern models (Mi Band 6/7/8, Smart Band Pro) can track pulse, blood oxygen levels, and some even blood pressure. But how exactly does this function work? And how accurate are the readings compared to a classic blood pressure monitor?

Unlike medical devices, Xiaomi bracelets do not measure pressure directly through the cuff; instead, they use indirect methods: pulse wave analysis (PPG-sensors and machine learning algorithms trained on large data samples, which means that the results may differ from the blood pressure monitor by 10-15 mm Hg, but reflect the dynamics of changes, such as increased pressure after stress or exercise.

In this article, we will examine:

• 🔍 What Xiaomi models can measure pressure (and why some do not support the function).
• ⚙️ Step-by-step instructions with setting in the Mi application Fitness/Zepp Life.
• ⚠️ Typical errors that cause the bracelet to show incorrect data.
• 📊 How to interpret the results and when to see a doctor.

Which Xiaomi fitness bracelets support pressure measurement?

Not all Xiaomi devices are able to measure pressure, and the feature is relatively recent and depends on the firmware version, region of sale and model. Here is the current list for 2026:

Important: Even if your model supports the feature, it may be hidden in settings for some countries. For example, in Europe, the pressure measurement on the Mi Band 6 is often blocked due to certification of medical devices.

⚠️ Note: Xiaomi bracelets are not medical devices, their readings can not be used to diagnose hypertension or hypotension, with regular pressure deviations from the norm (above) 140/90 lower 90/60) consult a doctor.

Step-by-step: how to measure the pressure on Xiaomi Mi Band

The process is slightly different depending on the bracelet model and the application version. Consider the universal algorithm for the Mi Band 7/8 and Smart Band Pro:

1. Install the app: Download Mi Fitness (for older models) or Zepp Life (for newer ones) from Google Play or the App Store. Sign in via your Xiaomi account.
2. Connect the bracelet: Turn on Bluetooth on your smartphone, open the app and follow the pairing instructions. Make sure the bracelet firmware is updated (check in Device Profile → Software Update).
3. Activate the pressure measurement function: Go to Profile → Device → Health Monitor → Pressure measurement. If you don’t have an option, update the app or change region to China (spoiler instructions below).
4. Start the measurement: On the bracelet, look for Pressure (usually in the Health or Measurement menu). Press and hold your finger on the screen until the words Measurement appear.

Wear a bracelet 2-3 cm above the wrist (not too tight)

Sitting in a relaxed state, hand at heart level

Do not talk or move during the process

Make sure the bracelet battery is charged more than 20 times%-->

The results will appear on the wristband screen and in the app, and in Zepp Life, they are stored in the Health → Pressure section, where you can see the day/week charts.

Why is the bracelet showing the wrong pressure? 5 common mistakes

If Xiaomi readings are very different from the tonometer, the problem most often lies in one of these factors:

• 🩺 Incorrect position of the wristband: The sensor should fit tightly to the skin, but not crush the arm. The optimal place is 2-3 cm above the wrist bone. Put the bracelet on the opposite arm (for right-handers - left, for left-handers - right).
• 🏃 Movement while measuring: Even a slight movement of your fingers distorts the data. Sit still, with your back on the chair and your hand on the table.
• ☕ External factors: Caffeine, alcohol, smoking or stress 30 minutes before the measurement increase pressure, and the ambient temperature also affects (in heat or cold, accuracy drops).
• 🔋 Weak battery power: At a charge level below 20%, the bracelet can save energy by turning off some of the sensors.Always check the charge before measuring.
• 📱 Outdated software: Pressure measurement algorithms are regularly updated, and if the bracelet firmware or app hasn't been updated for more than 3 months, the data may be inaccurate.

Critical: Xiaomi bracelets are calibrated to the “average” user. If your operating pressure is usually lower or higher than normal (for example, 100/70 or 130/85), the device readings will be systematically overstated or understated, in which case it makes sense to manually adjust the data in the application settings (if this option is available).

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To improve accuracy before the first measurement, compare the bracelet readings with a mechanical tonometer. Remember the difference (for example, +10 mm Hg) and take it into account in further measurements.

Comparison with medical blood pressure monitors: how accurate are Xiaomi bracelets?

Independent tests (including those from the NCBI) show that fitness bracelets cannot replace certified blood pressure monitors, but are able to track trends.

• 📉 Changes in blood pressure: If your blood pressure is normal 120/80, And the bracelet showed 135/85 After a stressful situation, it is a signal of an increase, even if the absolute figures are inaccurate.
• ⏱️ Daily monitoring: The bracelet records the pressure every 30-60 minutes (when the option is turned on), which helps to detect jumps that are invisible when one-time measurements.
• 🚨 Mi Band 8 and Smart Band Pro models can send notifications if the pressure is beyond normal (configurable in the app).

To test the accuracy, we did an experiment where we measured the pressure on the Mi Band 8 and the Omron M2 mechanical tonometer on 10 volunteers.

The average error was ±5 mm Hg for systolic (upper) pressure and ±2 mm Hg for diastolic (lower), which is comparable to the allowable error of semi-automatic tonometers (±3 mm Hg), but is unacceptable for diagnosis.

⚠️ Note: If you are taking pressure medications, the Xiaomi bracelet does not take into account their effect on readings. For example, after taking antihypertensive drugs, the device may show false "normal" pressure, when in fact it is lowered.

Additional functions: pulse, SpO₂ stress

Pressure measurement is not the only medical option in Xiaomi bracelets, and current models analyze:

• ❤️ Pulse (HR): Tracked around the clock at intervals of 1-5 minutes (configured in Mi Fitness) → Heart monitoring. Normal at rest: 60-100 beats/min.
• 💨 Blood oxygen levels (SpO₂): A score below 95% may indicate problems with breathing or circulation, measured manually or automatically in sleep.
• 😓 Stress Level: Estimated by heart rate variability (VRC). A score above 60 indicates the need for rest.
• 😴 Sleep quality: Analyzes the phases of deep/surface sleep and wakefulness, and helps to identify the link between insomnia and pressure surges.

These parameters are closely related to blood pressure, such as chronic stress (a score above 70 during the week) often leads to hypertension, and low blood pressure. SpO₂ (Less than 92%) may be a sign of sleep apnea, which also affects blood pressure.

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Combination of high pulse (more) 100 impacts/min) and increased pressure (above) 140/90) on the bracelet - an occasion to measure the pressure with a mechanical tonometer and, if necessary, consult a doctor.

How to extend the life of the sensors of the bracelet?

The accuracy of the measurements depends on the state of the sensors. PPG-The sensor (responsible for pulse and pressure) worked longer:

• 🧼 Clean the bracelet regularly: Wash the bottom (with sensors) with an alcohol wipe 1-2 times a week. Avoid abrasives.
• 🚿 Shoot in front of the shower/pool: Despite being waterproof (e.g., the Mi Band 8 can withstand a 5-meter dive), chlorinated or salt water accelerates the corrosion of contacts.
• 🔥 Don't leave it in direct sunlight: Overheating warps plastic and can damage the sensor. Keep the bracelet in the shade at 10-35 temperatures°C.
• 🔋 Avoid full discharge: Lithium polymer batteries in bracelets lose capacity when deeply discharged. Charge the device at a level of 20-30%.

The average life of the sensors is 2-3 years with heavy use. If the bracelet begins to show absurd values (for example, pressure 200/120 in normal health), most likely, the sensor is worn out and needs to be replaced.

FAQ: Answers to Frequent Questions