The Xiaomi Watch S4 41mm and Smart Band 10 have officially stepped onto the global wearable stage. These new additions to Xiaomi’s growing ecosystem aren’t just minor refreshes. They represent a significant leap forward in design, functionality, and smart integration, offering flagship-tier performance at everyday prices.
Compact Intelligence Meets Couture: Xiaomi Watch S4 41mm
A Smaller, Smarter Statement Piece
The Watch S4 41mm offers a premium design in a more refined and compact form. Measuring just 41.2 x 41.2 x 9.5 mm and weighing only 32g, it’s ideal for smaller wrists or users looking for something sleek and unobtrusive. A standout version includes a crystal-encrusted crown, blending fitness with fashion.
Its 1.32-inch AMOLED display features always-on capability, vibrant colours, and crisp resolution, making it practical and elegant.
Performance and HyperOS Integration
At its core, the new XRING T1 chip boosts energy efficiency by 35%, enabling smooth, lag-free operation and extended battery life. Running on HyperOS 2, the Watch S4 integrates seamlessly into Xiaomi’s smart ecosystem, delivering faster navigation, improved app responsiveness, and intuitive device syncing.
Advanced Health and AI-Driven Fitness Tracking
- 4-LED + 4 photodiode heart-rate sensor for high-precision monitoring
- 24/7 skin temperature tracking for wellness insights
- SpO2, sleep, stress, and respiratory tracking
- 150+ sport modes with automatic workout detection
- AI-generated summaries and real-time coaching via the Mi Fitness app
This makes the S4 41mm an exceptional all-rounder for fitness enthusiasts, health-conscious users, and tech-savvy professionals.
Smart Band 10: Big Ambitions in a Small Package
Brighter Display, Smarter Design
The Band 10 gets a serious visual upgrade with a 1.73-inch AMOLED screen, 60Hz refresh rate, and thinner bezels. The result is a compact, stylish band that rivals entry-level smartwatches in display quality.
AI-Powered Motion Tracking
With sophisticated AI and a new 9-axis motion sensor, the Band 10:
- Detects and classifies swim strokes
- Automatically identifies dozens of exercises
- Delivers personalised activity summaries
Long Battery Life and Ecosystem Sync
Despite its brighter screen and added sensors, the Band 10 offers up to 16 days of battery life. HyperOS Lite ensures smooth integration with other Xiaomi devices and services, from Mi Fitness data to smart home control.
Health Tracking Features
- Sleep analysis with phase breakdown and respiratory monitoring
- Stress and skin temperature alerts
- Smart reminders for hydration, movement, and mindfulness
The Smart Band 10 transforms from a basic tracker into a lifestyle assistant.
Sibling Rivalry: Watch S4 41mm vs 47mm
| Feature | Watch S4 41mm | Watch S4 47mm |
| Dimensions | 41.2 mm, 32g | 47 mm, 49g |
| Display | 1.32″ AMOLED | 1.43″ AMOLED |
| Battery | 7–8 days | Up to 10 days |
| Features | Identical | Identical |
Users seeking a lighter, more stylish option without sacrificing features will appreciate the 41mm model.
Smart Band 10 vs Band 9: The Upgrade is Real
| Feature | Band 9 | Band 10 |
| Display | 1.47″ TFT | 1.73″ AMOLED 60Hz |
| Sensor | Basic motion sensor | 9-axis + AI Swim Detect |
| Workout Modes | ~100 | 120+ with AI tracking |
| Battery Life | Up to 14 days | Up to 16 days |
| OS Integration | Basic | HyperOS Lite |
The Band 10 delivers tangible improvements in usability, fitness accuracy, and everyday performance.
Real-World Scenarios: How These Wearables Work for You
1. Sleep Support: Detects sleep phases and respiratory issues, provides daily improvement tips.
2. Workout Assistant: Auto-detects activities, offers swim stroke recognition, and generates fitness reports.
3. Preventive Wellness: Skin temperature and heart rate alerts help you spot fatigue or early illness.
4. Mindfulness Nudges: Gentle reminders encourage hydration, breathing, and screen breaks.
5. Smarter Notifications: Customisable alerts reduce noise, while watch controls can sync with smart home devices.
Pricing and Availability
- Watch S4 41mm: From CNY 999 (~USD $138)
- Smart Band 10: From CNY 269 (~USD $37)
Currently launched in China, global rollout is expected soon, particularly in Europe and Southeast Asia.
Final Thoughts
Xiaomi continues to redefine the value equation in wearables. The Watch S4 41mm and Band 10 offer top-tier features like AI coaching, advanced health tracking, and HyperOS integration at accessible price points. Whether you’re a fitness beginner, a health-tracking pro, or simply love smart tech that makes life easier, these wearables are more than worth a look.
Smart, stylish, and surprisingly powerful — Xiaomi’s new wearables raise the bar in 2025.
