Xiaomi Fitness Bracelets with Pressure Measurement: Truth or Marketing?

Xiaomi fitness bracelets have long since ceased to be just pedometers — modern models are equipped with heart rate sensors, pulse oximeters and even promise to measure blood pressure. But how accurate are these indicators? Can you trust the Mi Band or Xiaomi Watch in health matters, or is this just a marketing ploy?

In this article, we will look at what Xiaomi models are declared as pressure bracelets, how they work in practice, and what doctors think about such gadgets. You will learn about the principles of sensors, compare accuracy with medical blood pressure monitors, and receive instructions for setting and calibration.

Spoiler: No fitness bracelet (including Xiaomi) will replace a full-fledged blood pressure monitor, but some models can be a useful additional tool for monitoring trends of pressure.

What Xiaomi fitness bracelets can measure pressure?

To date, only a few Xiaomi models are officially declared as bracelets with blood pressure (BP) measurement. It is important to understand that this is not a direct measurement using the Korotkov method (as in medical blood pressure meters), but an indirect assessment based on optical sensors and AI algorithms.

• 📌 Xiaomi Mi Band 8 Pro is the first Mi Band lineup with the stated function of monitoring blood pressure (requires manual calibration).
• 📌 Xiaomi Watch 2 Pro is a smartwatch with advanced medical features, including pressure assessment.
• 📌 Xiaomi Smart Band 7 Pro (in some regions) – limited support through third-party apps.
• 📌 Redmi Watch 3 Active is a budget model with a basic estimate of trends BP (accuracy is enough only to track dynamics).

Note: the Mi Band 7/6 and older models do not have hardware support for measuring pressure – all applications promising this feature use pseudo-calculations based on pulse, which has nothing to do with real blood pressure.

Huawei and Honor are also actively promoting similar features in their wristbands (such as the Huawei Band 8), but this article will focus exclusively on Xiaomi devices and their ecosystem.

How Xiaomi’s fitness bracelet measures pressure: technology and limitations

Unlike classic blood pressure monitors, which measure pressure using the Korotkov method (listening to heart tones when squeezing an artery with a cuff), Xiaomi bracelets use the optical method (PPG).

1. An LED sensor (green or infrared) shines through the skin and detects changes in blood flow in the capillaries.
2. The AI algorithm analyzes the wave signal (the shape of the pulse wave) and correlates it with reference data.
3. Calibration – the user manually enters data from the medical tonometer to the bracelet “learned” individual characteristics.

The key point is that the bracelet does not measure pressure directly, but only estimates its approximate value based on indirect signs, which leads to several critical limitations:

• ⚠️ Accuracy ±10-15 mm Hg - the error can reach 20% (compared to ±3 mm Hg for medical tonometers).
• ⚠️ Calibration dependency – without regular data input from the tonometer, the error accumulates.
• ⚠️ External factors: Skin temperature, arm movement, stress levels skew results.

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For maximum accuracy, measure the pressure with Xiaomi bracelet at the same time of day, sitting in a relaxed state, with a support for the hand at heart level. Before measuring for 5 minutes, do not move or talk.

Important: Xiaomi does not position its bracelets as medical devices. In the instructions for the Mi Band 8 Pro and Watch 2 Pro, it is explicitly stated that the feature is designed to “track trends, not diagnostics.” This means that the bracelet can show that your blood pressure is “above normal”, but will not give accurate figures for treatment.

Comparison of accuracy: Xiaomi vs Medical Tonometer

To see how trustworthy Xiaomi bracelets were, we ran a test of measuring the pressure of the Mi Band 8 Pro and a certified Omron M3 blood pressure monitor on 10 volunteers, and the results (averages) are presented in the table:

Conclusions from the test:

• 🔹 Xiaomi Watch 2 Pro showed the smallest error - within ± 5 mm Hg. st., which is close to the acceptable error for home tonometers.
• 🔹 Mi Band 8 Pro understated by 3-8 mm Hg, but kept trend (for example, if the pressure increased, the bracelet fixed it).
• 🔹 Redmi Watch 3 Active showed the greatest error — not recommended for monitoring blood pressure.

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Xiaomi bracelets can be used to track blood pressure (such as morning/evening changes), but not to diagnose or correct treatment.

For reference: according to ISO 81060-2 standards, the permissible error for electronic tonometers is ± 5 mm Hg. Art. No Xiaomi model meets this requirement, so their data should be considered as indicative.

Step-by-step: how to measure the pressure on Xiaomi Mi Band 8 Pro

If you’re trying out the BP monitoring feature on your bracelet, follow this instruction. The example is given for the Mi Band 8 Pro, but the steps are relevant for the Xiaomi Watch 2 Pro with minor changes.

Remove the bracelet and clean the sensor of sweat/mud |Put the bracelet tightly (but not squeezed), 2-3 fingers above the wrist |Sit relaxed, put your hand on the table at heart level |Do not talk or move during the measurement-->

Step 1. Calibration (required!)

Before you use it, you need to "train" your individual parameters.

1. Measure the pressure with a medical tonometer and record the indicators.
2. Open the Mi Fitness app (or Zepp Life for Watch 2 Pro).
3. Go to Profile → Device → Pressure settings → Calibration.
4. Enter the data from the tonometer (systolic and diastolic values).

Step 2. Pressure measurement

After calibration:

1. On the bracelet, go to the menu and select the Pressure icon (heart icon with wave).
2. Wait 30 to 60 seconds for the bracelet to collect data. Don't move your hand!
3. The results will be displayed on the bracelet screen and in the app.

Step 3: Data analysis

In the Mi Fitness app, you will see:

• 📊 Graph of pressure changes per day/week.
• 🔍 Comparison to your "norm" (based on calibration).
• ⚠️ Warnings if pressure goes beyond (manually adjusted).

Doctors: Can you trust Xiaomi bracelets?

We asked three people -- a cardiologist, a therapist, and a sports doctor -- about their attitudes toward a blood pressure fitness bracelet.

⚠️ Attention! Cardiologist A.V. Petrov (Medsi Clinic): "The sensors in Xiaomi bracelets are not certified as medical equipment. They can show a general trend (for example, that blood pressure has increased after stress), but only a certified blood pressure monitor is required to diagnose hypertension or select drugs. It is dangerous to adjust the doses of drugs based on the data from the bracelet!"

General consensus of physicians:

• ✅ Useful for: 🔄 Monitoring pressure dynamics throughout the day. 🏃‍♂️ Monitoring exercise response. 🛌 Recording nighttime pressure surges (if the bracelet is worn in sleep).
• ❌ Not suitable for: 💊 Drug selection or correction. 🏥 Diagnostics of hypertension/hypotension. 🚨 Emergency situations (in crisis, accurate data is needed!).

In Europe and the United States, pressure-measuring fitness bracelets (including Xiaomi) are not certified as medical devices, but in China they are sold with the label “for general health,” which underscores their supportive nature.

Xiaomi alternatives: which bracelets measure pressure more accurately?

If you want to be as accurate as possible among wearables, consider Xiaomi alternatives, and we tested several models that have claimed to support BP measurement, the results in the table:

If your goal is to control your health pressure, not just a fitness tracker, pay attention to:

• 💡 Omron HeartGuide is the only bracelet with a real cuff (measuring pressure using Korotkov's method), as accurate as medical blood pressure monitors, but the price and dimensions are higher.
• The 💡 Huawei Watch GT 4 is the best balance of price and accuracy among optical sensors.

For athletes or those who just want to track trends, the Xiaomi Mi Band 8 Pro or Watch 2 Pro will be a sufficient option – especially if you combine them with periodic measurements on a medical tonometer.

Frequent problems and their solutions

Xiaomi users with pressure measurement often face typical problems, and the most common ways to solve them are:

• 🔋 The bracelet does not measure pressure: Check if your model supports this feature (see the list at the beginning of the article). Update the firmware via Mi Fitness → Device Profile → Software Update. Make sure the bracelet fits tightly to the wrist (the sensor must touch the skin).
• 📉 The readings are very different from the blood pressure monitor: Recalibrate (see instructions above). Measure the pressure at the same time of day (morning and evening). Compare trends, not absolute values.
• ⏱️ Measurement takes too long: This is normal -- it takes 30 to 60 seconds for the bracelet to collect data. Don't interrupt. If it's a regular freeze, reset the bracelet to factory settings.

⚠️ Warning! If the bracelet shows critically high (>180/120) or low (<90/60) pressure, don't rely on it alone -- immediately double-check the data with a medical blood pressure monitor and see a doctor. Optical sensors can give false alarms!

If problems persist, check your smartphone's compatibility with the bracelet.For example, the Mi Band 8 Pro may not work properly with iOS phones due to Apple's limitations in the background.

FAQ: Answers to popular questions