Smartwatches with blood pressure and pulse measurement function are no longer a curiosity, but not all models cope with this task equally accurately. Xiaomi is one of the few brands that offers affordable gadgets with medical sensors certified for home use. However, before buying it, it is important to understand: which models really measure pressure (rather than just evaluating it by indirect signs), what the error of readings is, and what nuances affect accuracy.
In this article, we will analyze the current models of Xiaomi smart watches 2023-2026 with the function of a tonometer and a pulsemeter, compare their technical characteristics, tell about the principles of operation of sensors and give practical recommendations for choosing. You will also learn where to safely buy the original gadget (not a fake), how to check its performance after purchase and what settings will allow you to get the most accurate data.
Spoiler: Not all Xiaomi watches with the declared pressure measurement function are equally useful. Some models use indirect calculation methods (for example, through pulse wave analysis), which gives a greater margin of error than classic blood pressure monitors. We selected only those devices that have passed clinical trials and have certificates of compliance with medical standards.
What Xiaomi Smart Watch Really Measurs Pressure?
There are more than a dozen Xiaomi smartwatches on the market with a "pressure measurement" function, but not all of them work on the same principle, because direct blood pressure measurement (like a mechanical or automatic blood pressure monitor) requires air injection into the cuff, which is technically difficult to implement in a compact watch case, so most gadgets use indirect methods:
- 🔍 PPG-sensor + AI algorithms: analysis of pulse wave shape (less accurate, error to the point of view) ±10 mm Hg.).
- 🩺 Calibration by classical tonometer: requires initial adjustment with a medical device (more precisely, but you need to repeat the calibration once every 1-2 weeks).
- ⚡ Hybrid sensors: a combination PPG and accelerometer for hand movement (used in premium models).
Of the current Xiaomi models, only the Xiaomi Watch 2 Pro and Huawei Watch D (though not Xiaomi, but often compared) have certified medical sensors for measuring pressure. The rest of the devices (including the popular Mi Band 8 Pro) offer only estimation data that can not be used for diagnosis.
| Model | Type of sensor | Pressure error | Certification | Price (2026) |
|---|---|---|---|---|
| Xiaomi Watch 2 Pro | PPG + calibration | ± 5 mm Hg* | CE, ISO 13485 | 12 000–15 000 ₽ |
| Xiaomi Watch S3 | PPG (valuation) | ±10-15 mm Hg. | No. | 8 000–10 000 ₽ |
| Mi Band 8 Pro | PPG (trend) | Not applicable. | No. | 4 500–6 000 ₽ |
| Huawei Watch D | Mini cuff | ± 3 mm Hg. | FDA, CE | 18 000–22 000 ₽ |
* Subject to regular calibration by a medical tonometer.
⚠️ Note: If you need a gadget to control hypertension or heart disease, choose only models with certification (for example, Xiaomi Watch 2 Pro or Huawei Watch D.
Top.-5 Xiaomi smart watch with a pulseometer and tonometer (2026)
We selected the top 5 models from Xiaomi and related brands (such as Amazfit, which belongs to the same ecosystem) that combine measurement accuracy, functionality and adequate price.
- 📊 Accuracy of sensors (comparison with medical tonometers).
- 🔋 Autonomy (how much charge is held when actively monitored).
- 📱 Compatibility (work with iOS/Android, Support for Mi Fitness).
- 💰 Price/quality ratio.
The first place is occupied by Xiaomi Watch 2 Pro, the flagship model with a certified pressure sensor, which requires calibration every 7-14 days. GTR 4 with improved PPG-sensor and support for 150 sports modes. third place Xiaomi Watch S3, It's cheaper, but it's less accurate:
| Model | Type of pressure measurement | Autonomy | Pluses | Cons |
|---|---|---|---|---|
| Xiaomi Watch 2 Pro | Sizing + PPG | 7 days | ✅ Certificate CE✅ AMOLED-screen-screen"✅ 150+ sport-regime | ❌ Requires calibration❌ More expensive than analogues |
| Amazfit GTR 4 | PPG (improved) | 14 days | ✅ 150+ regimes✅ Lightweight housing (34g)✅ Fast charging. | ❌ No certification for pressure❌ Fewer features than the Watch 2 Pro |
| Xiaomi Watch S3 | PPG (valuation) | 12 days | ✅ Cheaper than competitors✅ Good screen.✅ Support NFC | ❌ Large pressure error❌ No certificates. |
| Redmi Watch 4 | PPG (trend) | 10 days | ✅ Budget price✅ 140+ face-piece✅ Light (30g) | ❌ No pressure measurement.❌ Just the pulse and SpO₂ |
| Haylou Solar Plus | PPG (basic) | 20 days | ✅ Cheapest.✅ Long autonomy✅ Water protection 5 ATM | ❌ No pressure.❌ Features of little function |
🔹 If you want accurate pressure control, take the Xiaomi Watch 2 Pro or Amazfit GTR 4 (but keep in mind that the second model is not certified for medical purposes).For fitness and general monitoring, the Xiaomi Watch will be suitable. S3 or Redmi Watch 4.
💡
Only the Xiaomi Watch 2 Pro in the entire lineup has a certificate for measuring pressure, and the rest of the models give only estimates that are not suitable for diagnosis.
How do pressure and pulse sensors work in Xiaomi watches?
To understand how trustworthy smartwatches are, let's look at how they measure blood pressure and heart rate without a traditional cuff, and they're based on two key sensors:
- PPG-sensor (photoplethysmography): illuminates the skin with green light and analyzes the reflected signal to determine the pulse and oxygen saturation of the blood (SpO₂). In advanced models (for example, the Watch 2 Pro) uses multichannel. PPG more precisely.
- Accelerometer: Tracks hand movements to rule out artifacts (such as tremors or sharp gestures) when measured.
To measure pressure, Xiaomi watches use machine learning algorithms that analyze:
- 📈 The shape of the pulse wave (speed of propagation, amplitude).
- ⏱️ Time of wave propagation (PTT — Pulse Transit Time).
- 🩸 Calibration data (if the user has entered the values from the medical tonometer).
⚠️ Attention: Without prior calibration (input of data from a classical tonometer), the error of pressure measurement can reach ±15-20 mm Hg makes readings almost useless for people with hypertension. In the Xiaomi Watch 2 Pro, the calibration must be repeated every 1-2 weeks, otherwise the accuracy drops.
🔹 How to measure in real conditions?
- You run a function in the clock menu (e.g. Health) → Pressure).
- The gadget asks you to sit still for 30 to 60 seconds, putting your hand on the table.
- Sensors read the pulse wave and analyze it based on the latest calibration.
- The result is displayed on the screen marked "Estimate value" or "Scaling required".
Why Xiaomi Watches Will Not Replace Medical Tonometers
Where to buy the original Xiaomi watch with a tonometer? Official and verified sellers
One of the biggest risks of buying a Xiaomi smartwatch is getting a fake or a grey import, especially for models with medical sensors, because fakes often have cheap sensors that give knowingly incorrect readings, and we've compiled a list of reliable sites where you can buy the original gadget:
- 🛒 Official website of Xiaomi Russia (mi.com/ru) — guarantee 12 months, but prices are higher than the market 10–15%.
- 🏬 M-Video, Citilink, Eldorado – check for official Xiaomi warranty (the check must indicate the importer) OOO "Xiomi RU").
- 🌍 AliExpress (only at official stores): Mi Global Store (rating 99%+). Xiaomi Official Flagship Store. ⚠️ Avoid sellers with a rating below 98% or without a Top Brand badge".
- 📦 Ozon, Wildberries, Yandex Market – look for sellers marked “Official Partner Xiaomi".
🔹 How to distinguish the original from the fake?
Hologram packaging and QR-code (checked in the Mi Home app)
Serial number on the case coincides with the number in the settings (Settings) → About the device)
Branded firmware (in fakes is often customized) MIUI Watch)
Russian language in the menu and instructions
Warranty stamp with the official importer's stamp-->
⚠️ Attention: AliExpress and eBay often sell "global versions" of Xiaomi watches at a low price, such devices may not have Russian in the firmware or support for local Mi Fitness servers:
- 📌 "Does this model support the Russian language in the menu?"
- 📌 "Is there an official guarantee for Russia?"
- 📌 "Can you tie your watch to your Xiaomi account?"
💡 Tip: If you buy a pressure watch, check for a certificate CE or ISO 13485 in the product description. Without these documents, the gadget failed medical tests and may give inaccurate data.
How to set up a Xiaomi watch to accurately measure your blood pressure and heart rate?
Even the original Xiaomi watch can show incorrect data if it is misconfigured or used. Follow this instruction to minimize error:
- Pressure calibration (Watch 2 Pro only): Measure pressure with a medical tonometer (e.g. Omron) M2). Open the Mi Fitness app → Devices → Pressure settings → Calibration. Enter systolic and diastolic pressure. Recalibrate once every 1-2 weeks.
- Proper position: Sit at a table, put your hand on a flat surface. The watch should fit tightly to your wrist (but not clamped) Do not talk or move during measurement.
- Setting up your profile in Mi Fitness: Specify your exact age, gender and weight (affects the calculation algorithms). Enable Continuous pulse monitoring (but this will reduce autonomy).
⚠️ Attention: If you are taking pressure medications (such as ACE inhibitors or beta blockers), the clock's algorithms may give incorrect results:
- Measure your blood pressure at the same time (for example, morning and evening).
- Compare the clock readings with a medical tonometer daily in the first week.
- Turn off the option Automatic pressure measurement if the error exceeds 10 mm Hg.
🔹 Frequent errors in measurement:
- ❌ Too tight or loose landing – sensor PPG should be tightly touching the skin, but not clamping the vessels.
- ❌ Measurement after exercise – wait 10-15 minutes for your pulse to stabilize.
- ❌ Use on cold wrist – low temperature narrows blood vessels, which distorts the data.
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If the watch consistently shows high or low pressure, try changing your arm (on the left hand of right-handers, the vessels may be less accessible to the sensor due to anatomy).
Comparison of Xiaomi with competitors: Huawei, Samsung, Apple
Smart watches with pressure measurement are released not only Xiaomi, to make an informed choice, compare them with the main competitors in key parameters:
| Brand/Model/Model/ | Type of pressure sensor | precision | Certification | Price (2026) | Pluses | Cons |
|---|---|---|---|---|---|---|
| Xiaomi Watch 2 Pro | PPG + calibration | ± 5 mm Hg* | CE, ISO 13485 | 12 000–15 000 ₽ | ✅ Cheaper than competitors✅ Good autonomy | ❌ Requires calibration❌ No. ECG |
| Huawei Watch D | Mini cuff | ± 3 mm Hg. | FDA, CE | 18 000–22 000 ₽ | ✅ Highest accuracy✅ There is. ECG | ❌ Expensive.❌ Large-scale |
| Samsung Galaxy Watch 6 | PPG (valuation) | ±10 mm Hg. | No. | 20 000–25 000 ₽ | ✅ Premium design✅ Many functions | ❌ No certification❌ Small autonomy |
| Apple Watch Series 9 | No pressure measurement. | — | — | 35 000–40 000 ₽ | ✅ The best ecosystem✅ Precise pulsemeter | ❌ No pressure.❌ Very expensive. |
* Regular calibration.
🔹 Conclusions:
- 🥇 The best accuracy is the Huawei Watch D (but it’s not Xiaomi).
- 💰 Best Price/Quality Rate: Xiaomi Watch 2 Pro.
- 🚫 Not suitable for medical purposes – Samsung Galaxy Watch and Apple Watch (no certification for pressure).
⚠️ Note: If you have arrhythmia or atrial fibrillation, even a certified watch can give inaccurate data. ECG (For example, Omron HeartGuide or Withings BPM Connect).