Choosing between a smartwatch and a fitness bracelet from Xiaomi is often a headache for customers. Both devices monitor health, display notifications and sync with a smartphone, but their capabilities are radically different. Why do some users prefer the compact Mi Band 8, while others prefer the full-featured Watch 2 Pro? It’s all about the intended purpose: the wristbands are optimized for sports and monitoring, and the watch is approaching the mini-smartphone on the wrist.
In this article, we will discuss 10 fundamental differences between the two types of devices, from design and autonomy to application support and sensor accuracy. You will learn which device is better for running and which is better for answering calls, why Xiaomi bracelets hold a charge 3-5 times longer than smart watches of the same price category, and in which cases overpayment for smart watch functions is justified. For clarity, we compiled a comparative table of current models in 2026 and added a checklist to help determine the choice in 2 minutes.
1. Design and ergonomics: compactness vs multifunctionality
The first thing that catches your eye is the size and weight: Xiaomi fitness bracelets (Mi Band, Smart Band series) weigh 10–25 grams and are 9–12 mm thick; their body is made of lightweight plastic or aluminum, and their strap is made of silicone or fabric, such devices are practically not felt on the arm even during sleep.
Smart watches (Watch S3, Watch 2 Pro) are heavier (30–50 g) and more massive (thickness 10–14 mm). Their body is more often metal (stainless steel, aluminum), and the display occupies 50–70% of the front panel. For example, the Xiaomi Watch S4 with AMOLED- screen 1.43" visually closer to a classic watch than to a sports accessory. This is a plus for those who want to wear the device at work or in everyday life, but a minus for athletes: large cases can interfere with weightlifting exercises or pull-ups.
- 📏 Bracelet: Weight 10–25 g, thickness 9–12 mm, plastic/aluminum case
- ⌚ Watch: weight 30-50 g, thickness 10-14 mm, metal case, large display
- 🎨 Personalization: watches have interchangeable straps (silicone, leather, metal), bracelets have only silicone/tissue
⚠️ Warning: If you have a thin wrist (less than 15 cm in girth), Xiaomi smartwatches can look bulky. Check the ability to adjust the strap before buying - some models (such as the Watch S1 Active) have a minimum strap length of 140 mm.
2.Autonomy: Why bracelets last 3-5 times longer
One key difference is battery life. Xiaomi fitness bracelets keep charge from 7 to 20 days thanks to energy-efficient screens (often monochrome) and a simplified operating system. For example, Mi Band 8 with AMOLED- display will last up to 16 days in standard use, and the NFC version will last up to ZXQPH0006QXXX days.
Smartwatches, even with capacious batteries (300-500 mAh), rarely last longer than 5-7 days.
- 🔋 Permanently active color display (AMOLED or TFT)
- 📱 Background sync with applications (weather, notifications, music)
- 🎮 Launching third-party widgets and mini-programs
| Model | Type of device | Battery capacity (mAh) | Autonomy (days) | Fast charging. |
|---|---|---|---|---|
| Xiaomi Mi Band 8 | Fitness bracelet | 190 | 16 | No (2 hours to 100%) |
| Xiaomi Smart Band 8 Pro | Fitness bracelet | 289 | 14 | Yes (45 minutes to 80%) |
| Xiaomi Watch S3 | Smart watches | 486 | 7 | Yes (30 min to 60%) |
| Xiaomi Watch 2 Pro | Smart watches | 495 | 5 | Yes (25 minutes to 50%) |
Important: The autonomy of smart watches can be extended by disabling:
Turn off the always active display (AOD)
Reduce the screen refresh rate to 30 Hz
Turn off automatic weather synchronization
Disable notifications from unnecessary applications
Use the "Battery Savings" mode"-->
Functionality: from pedometer to call
The difference is most noticeable here: Xiaomi fitness bracelets focus on:
- 🏃♂️ Sports tracking: pedometer, calories, 150+ exercise regimens (running, cycling, swimming)
- ❤️🩺 Health monitoring: pulse, SpO₂ (oxygen saturation), stress, sleep (phase)
- 📱 Basic notifications: incoming calls, SMS, messages from messengers (no response)
Smartwatches add to this:
- 📞 Full Calls: Built-in microphone and speaker for conversations (e.g., Watch 2 Pro)
- 🎵 Autonomous music playback: 2-4 GB of memory for tracks (without phone)
- 🛒 NFC for payment: Mi Pay or Google Pay support (depending on model)
- 📱 Application Installation: Limited Set (Weather, Calendar, Translator) via Mi Fitness or Wear OS
Health monitoring
Phone-free calls
Notifications from social networks
Payment through NFC
Managing music
Other-->
Critical: Xiaomi bracelets don’t have a GPS- module (except for the Smart Band 8 Pro).This means that you’ll have to bring a smartphone with you to accurately track your running route or bike ride. In a smartwatch, the GPS is built into the 90% models (with the exception of budget versions).
4. Sensor accuracy: myths and reality
Many people believe that smart watches measure heart rate or steps more accurately thanks to “advanced” sensors, and in practice the difference is minimal: both wristbands and Xiaomi watches use PPG optical sensors (photoplethysmography) to measure heart rate, with an error of ±5-10% compared to medical equipment.
Where the clock wins:
- 🩺 ECG: Watch S3 and Watch 2 Pro (requires certification in your country)
- 🌡️ Skin temperature: available in top watch models (e.g. Watch S4)
Where bracelets are on par:
- 💤 Sleep tracking: Mi Band 8 and watches use the same Sleep Breathing Quality algorithm
- 🏊 Waterproof: both bracelets and watches have 5 ATM protection (swimming is possible)
How to check the accuracy of Xiaomi pulsomer?
5. Compatibility with smartphones and ecosystem
Both types of devices work with Android and iOS, but there are nuances:
Fitness bracelets:
- 📱 Connect via Mi Fitness (formerly Zepp Life)
- 🔄 Sync data with Google Fit, Apple Health, Strava
- ❌ No support for third-party apps (e.g. Spotify or Telegram)
Smart watch:
- 📱 Models on Wear OS (e.g. Watch 2 Pro) support installation of apps from Play Market
- 🔄 Full sync with Google Assistant, Google Maps (navigation on the watch screen)
- ⚠️ iPhone functionality is limited (no calls, no notifications)
⚠️ Warning: If you use an iPhone, Xiaomi smartwatches will lose up to 40% of features. For example, the Watch S3 will not run Xiao AI voice assistant, and notifications will come with a delay. For iPhone owners, it is better to consider the Apple Watch or Mi Band bracelet.
6.Price and feasibility of purchase
Cost is one of the main factors: Xiaomi fitness bracelets are 2-3 times cheaper than smart watches:
- 💰 Mi Band 8: 2 500–3 500 ₽
- 💰 Smart Band 8 Pro: 4 000–5 000 ₽
- 💰 Watch S3: 12 000–15 000 ₽
- 💰 Watch 2 Pro: 18 000–22 000 ₽
When the bracelet is more profitable:
- 🏃 You only need a pedometer, a pulse meter and notifications.
- 💤 You monitor your sleep and stress levels
- 🔋 Self-driving is important (don’t want to charge your device every day)
When to pay extra for the watch:
- 📞 You miss calls often and want to answer from your wrist
- 🎵 You need music without a phone (for example, for jogging)
- 🛒 You are using contactless payments
- 🗺️ Self-contained navigation is important (GPS without a smartphone)
💡
If your budget is limited to 5,000 ₽, Xiaomi fitness bracelet will cover 80% of the average user’s needs. Smartwatches are justified only when you actively use their “smart” functions (calls, NFC, applications).
7. Display and control: sensor vs button
The screens of the devices are fundamentally different:
Fitness bracelets:
- 📺 Type: AMOLED (color) or monochrome (budget models)
- 🔘 Control: Sensor + 1 physical button (in Mi Band 8)
- 🔋 Energy consumption: monochrome screens consume 2 times less battery
Smart watch:
- 📺 Type: AMOLED with Always-On Display support (AOD)
- 🔘 Control: sensor + rotating crown (in Watch S3)
- 🎨 Customization: interchangeable dials, widgets, animations
An important point: bracelets often have smaller screens diagonally (0.8-1.1), making it difficult to read long notifications: a 1.3-1.43 display clock, and text can be scaled.
8. Additional chips: what only watches can do
A few features that you won’t find in fitness bracelets:
- 📸 Smartphone camera control: remote shutter release (useful for selfies or group photos)
- 🔦 Flashlight: Watch 2 Pro has built-in lighting for dark rooms
- 🗣️ Voice Assistant: Xiao AI or Google Assistant (in Wear OS models)
- 🚗 Smart home control: turning on lights, air conditioning through Mi Home
Not all of these features work perfectly, however, as voice input in the Xiaomi Watch S3 often fails to recognize commands in noisy environments, and camera control is only available in the company’s Mi Camera app.
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If you’re choosing a smartwatch to control your smart home, check compatibility with your devices. For example, the Watch 2 Pro doesn’t support Zigbee protocol, so it won’t be able to directly control Aqara sensors without a smartphone.