The Xiaomi Smart Band 9 is the latest installment in Xiaomi’s popular line of budget fitness trackers. With a bright AMOLED screen, robust health tracking, and sleek design — all for under $50 — it’s easy to see why this smart band is generating buzz. But does it live up to expectations? Here’s our full hands-on review for U.S. buyers.
Key Specs:
Display: 1.62” AMOLED, 60Hz, 1200 nits
Battery Life: Up to 21 days (avg. 9–14 with regular use)
Weight: 15.8g (0.56 oz)
Water Resistance: 5ATM
Tracking: Heart rate, SpO₂, sleep, stress
Workout Modes: 150+ sports modes
Smart Features: Music control, camera remote, app notifications, 200+ watch faces
U.S. Price: ~$45 (Amazon, Walmart, AliExpress)
📱 Design & Display
The Band 9 keeps a minimal, modern design with a polished aluminum alloy frame and soft, comfortable straps. At just over half an ounce, it’s ultra-lightweight and great for all-day wear — including sleep tracking.
The real star is the 1.62-inch AMOLED display, which features a smooth 60Hz refresh rate and up to 1200 nits of brightness. Whether you’re checking steps in daylight or controlling music at the gym, the screen is responsive and easy on the eyes.
🔋 Battery Life
Xiaomi packs in a 233 mAh battery, claiming up to 21 days on a single charge. In real-world use with 24/7 heart rate and sleep tracking, most users can expect around 10 to 14 days — still very respectable and better than most entry-level smartwatches.
🏃♂️ Fitness & Health Tracking
Whether you're a beginner or casual athlete, the Band 9 covers the core health metrics:
- Real-time heart rate monitoring
- SpO₂ (blood oxygen) levels
- Sleep tracking with REM stages
- Stress tracking & breathing guidance
- Over 150 workout modes including HIIT, walking, cycling, yoga, strength training
Note: The Smart Band 9 does not have built-in GPS, so it will use your smartphone’s GPS for location-based activities like running.
💡 Smart Features
It’s not quite a smartwatch, but the Band 9 includes plenty of helpful tools:
- Music controls (Spotify, YouTube Music, etc.)
- Remote shutter for phone camera
- Call and app notifications with customizable vibration patterns
- 200+ watch faces via the Mi Fitness app
- Bluetooth 5.4 for fast, stable pairing
👍 Pros
- High-resolution AMOLED display with smooth visuals
- Strong battery life for daily use
- Comprehensive fitness tracking for the price
- Lightweight and comfortable for 24/7 wear
- Under $50 — incredible value
👎 Cons
- No built-in GPS — requires phone for route tracking
- Basic smartwatch features — no voice assistant or app store
- Not ideal for serious athletes or runners
💲 Where to Buy
You can find the Xiaomi Smart Band 9 through trusted sellers:
✅ Final Verdict
Rating: 4.5/5 ⭐
The Xiaomi Smart Band 9 continues the brand’s tradition of offering unbeatable value. It doesn’t try to replace a full-featured smartwatch, but for under $50, it gives you all the fitness and health essentials with an excellent display and battery life. If you’re a casual user, student, or someone getting started with health tracking — this is a no-brainer.
Want a fitness tracker with GPS or voice assistant? Consider the Xiaomi Band 9 Pro or a smartwatch like the Amazfit Bip 5.

