Xiaomi watches measure blood pressure and heart rate: a full review of models with medical sensors

Smartwatches with blood pressure and pulse measurement have become an integral part of a healthy lifestyle. Xiaomi offers several models equipped with advanced sensors to monitor key cardiovascular indicators. Some people use optical sensors. PPG (photoplethysmography, others - electrocardiogram (ECG), The most advanced combine both methods with AI algorithms.

In this article, we will understand which Xiaomi watches are able to measure pressure and pulse, how accurate their readings are compared to medical blood pressure meters, and how to properly configure the device for maximum accuracy. MIB (Medical Device Registration Certificate, which is officially approved for medical use in China and the EU.

It's important to understand that even the most advanced smartwatches won't replace professional diagnostics, but they can be a reliable tool for daily health monitoring, and then we can analyze each model in detail with pros, cons and calibration instructions.

1. TOP-5 Xiaomi watches with measurement of pressure and pulse in 2026 year

The list is based on official specifications, user reviews and independent tests, all of which support synchronization with the Mi Fitness app (for global versions) or Zepp Life app (for devices under the Amazfit brand, which is also owned by Xiaomi).

• 🏆 Xiaomi Watch 2 Pro – flagship with sensor ECG Support for pressure measurement by algorithm PPG + AI. Certified as a medical device in the EU.
• 💡 Xiaomi Watch S3 — Optimal price-to-function ratio: Measuring pressure through an application (requires manual tonometer calibration).
• 🩺 Mi Band 8 Pro – budget fitness bracelet with basic pulse monitoring and stress assessment (pressure is calculated indirectly).
• ⚡ Amazfit GTR 4 (from a subsidiary brand) – Advanced autonomy and BioTracker 4.0 sensor for accurate pulse, but without direct pressure measurement.
• 🔋 Xiaomi Smart Band 7 Pro – an improved version of the bracelet with support for continuous pulse monitoring and warnings about arrhythmia.

Important: Watch 2 Pro and Watch only S3 They have built-in algorithms to measure pressure, and the other models either estimate it indirectly (through the pulse wave) or require additional accessories.

2.How do pressure and pulse sensors work in Xiaomi watches?

The measurement technologies in smartwatches are based on two key methods:

1. Photopletismography (PPG): The sensor shines green light on the skin and analyzes the reflected signal to determine heart rate and heart rate variability.
2. Electrocardiography (ECG): It detects the electrical activity of the heart through contact electrodes, allows you to detect arrhythmias and more accurately assess blood pressure (available only in the Watch 2 Pro).

To measure pressure, Xiaomi watches use a combined approach:

1. Sensor. PPG It detects the pulse wave and its changes.
2. The algorithm analyzes Pulse Transit Time (PTT) — time of pulse wave propagation from heart to wrist.
3. The data correlate with age, gender and previous user performance (initial calibration with a medical tonometer is required).

Critical feature: the accuracy of measuring pressure on the wrist is lower than that of the shoulder tonometer, and may deviate by ±10 mmHg Manufacturer recommends using watch readings only for trends, not for diagnostics.

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To improve measurement accuracy, wear the watch 2-3 cm above the wrist and ensure tight contact of the sensor with the skin.

3. Xiaomi Watch 2 Pro: flagship with certified ECG and pressure measurement

Xiaomi Watch 2 Pro is the first model of the brand to receive a certificate of a medical device (MIB Class II) function ECG and pressure measurements:

• 📊 Sensor. ECG Supported diagnosis of atrial fibrillation (AFib).
• 🔍 Optical sensor PPG New generation with 8 photodiodes.
• 📱 Support for Xiaomi Health Algorithms AI data-analyzing.
• 🔋 Battery for 470 mAh (up to 7 days of battery life).

Features of pressure measurement:

• Requires initial calibration using a shoulder tonometer (data is entered manually into the application).
• Supports continuous monitoring in the background (every 30 minutes).
• The indications are updated based on user activity (e.g. after training).

How to turn on the pressure measurement:

1. Open the Mi Fitness app.
2. Go to the Device. → Xiaomi Watch 2 Pro → Heart health → Pressure adjustment.
3. Follow the calibration instructions (you will need to enter data from a medical tonometer).

⚠️ Attention: Function ECG It is only available in the regions where the official permission has been obtained (EU, China), in Russia and the United States it can be blocked by software.

4. Xiaomi Watch S3: Best choice for health monitoring

Watch S3 — This is an improved version of the Watch. S2 With better sensors and design, the main advantages:

• 🩺 Pressure measurement through PPG + AI algorithms (requires manual calibration).
• 📉 Monitoring SpO₂ (Oxygen saturation and stress levels.
• 🏃‍♂️ 150+ Sports modes with automatic activity recognition.
• 🔄 Support for eSIM (in version with the LTE).

Instructions for setting up pressure measurement:

1. Install the latest version of the Mi Fitness app.
2. In the menu of the clock, select Health → Pressure. → Sizing.
3. Take the readings with the shoulder tonometer and enter them in the application.
4. Wait for the synchronization to be completed (it will take 1-2 minutes).

The accuracy of measurements depends on:

• Quality of contact of the sensor with the skin (the strap should be tightly fastened).
• Lack of movement during the procedure.
• Regular recalibration (recommended every 2 weeks).

Tightly fasten the strap on your wrist|

Sit down and relax for 5 minutes.|

Do not talk or move your hand.|

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

5. Mi Band 8 Pro and other bracelets: limited features

Xiaomi fitness bracelets (Mi Band and Smart Band series) do not have built-in algorithms for directly measuring pressure, but can estimate it indirectly through:

• 📈 Analysis of heart rate variability (HRV).
• 🔄 Correlation with pulse and activity level data.
• 🧠 AI algorithms trained on big data (accuracy lower than clocks).

The Mi Band 8 Pro features a stress assessment function that indirectly signals possible pressure surges.

• ❌ No way to enter data from the tonometer for calibration.
• ❌ Indications not certified for medical use.
• ⚠️ It is recommended to use only for general monitoring, not for diagnosis.

If you want accurate data, choose a watch (Watch 2 Pro or Watch). S3) Or additionally use a portable tonometer, for example, Xiaomi Mi Electric Blood Pressure Monitor.

Model comparison: table of accuracy and function

The chart shows that only the Watch 2 Pro offers full medical functionality, and the rest will be suitable for general control, but will not replace professional equipment.

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For maximum accuracy, choose models with support ECG (For example, Xiaomi Watch 2 Pro and calibrate the device regularly using a shoulder tonometer.

7. Frequent errors in measuring pressure and pulse

Even the most advanced Xiaomi watches can show inaccurate data if you do not follow the rules of use.

• 🚫 Weak contact of the sensor with the skin: the strap is fastened too loose or dirty (sweat, cream, tattoos interfere with reading).
• 🚫 Movements during measurement: even a slight movement of the hand distorts the reading PPG-sensor.
• 🚫 Lack of calibration: without entering data from a medical tonometer, the clock algorithms work blindly".
• 🚫 Low battery power: At levels below 20%, sensors can be turned off to save energy.
• 🚫 Use during exercise: pulse and pressure in dynamics are measured with a large margin of error.

How to avoid mistakes:

1. Before the measurement, sit down and relax for 5 minutes.
2. Wipe the sensor and skin on your wrist with a dry wipe.
3. Tighten the strap so that only one finger passes between it and the skin.
4. Do not talk or move your hand during the procedure.

⚠️ If the watch is constantly showing pressure higher 140/90 mmHg or pulse higher 100 strokes / min at rest, consult a doctor - this may be a sign of hypertension or arrhythmia.

8.Alternatives: What other Xiaomi devices measure pressure?

In addition to smartwatches, Xiaomi produces specialized medical gadgets:

• 🩺 Xiaomi Mi Electric Blood Pressure Monitor is a portable Bluetooth synchronized tonometer. ±3 mmHg. st., certified to the standard ISO 81060-2.
• ⚡ Xiaomi Smart Blood Pressure Monitor 2 – Updated version with color display and support for family profile (up to 8 users).
• 📱 Xiaomi Health Scale 2 – smart scales with body composition analysis and indirect pressure assessment through bioimpedance (accuracy low).

For comprehensive health monitoring, you can combine a watch (such as the Watch 2 Pro) with a portable blood pressure monitor, and the data will automatically sync in the Mi Health app, forming a single measurement history.

FAQ: Answers to popular questions