| Apple Watch Ultra | Xiaomi Smart Band 10 | |
|---|---|---|
| Pricing | ||
| Starting price | $799 | $40★ |
| Subscription | ✓ None | ✓ None |
| Hardware | ||
| Weight | 63g | 16g★ |
| Water resistance | 100m★ | 5ATM |
| Battery | 2.1 days | 21 days★ |
| Always-on display | ✅ | ✅ |
| GPS | ✅★ | ❌ |
| Cellular | ✅★ | ❌ |
| Platform | iOS only | iOS & Android |
| Tier | Sports GPS | Fitness Tracker |
| Buy timing | ||
| Released | Sep 18, 2026 | Jun 30, 2025 |
| Cycle advice | good★ | bad |
| Deals advice | neutral | good★ |
| Next model | — | Xiaomi Smart Band 11 (On sale in China, Hong Kong and South Korea — Europe date not yet confirmed) |
The Ultra 4 lasts roughly twice as long as the Series 12, with up to 45 hours of GPS workout tracking in Max Extended Workout mode. Satellite Emergency SOS works without cellular or WiFi coverage.
The new health sensing system samples heart rate every five seconds all day and HRV every five minutes, feeding a 0–10 readiness score.
The 49mm titanium case and 3000-nit display make this watch usable in full direct sunlight and water depths up to 100m (recreational scuba diving to 40m).
The Smart Band 10's 1.72" display peaks at 1500 nits — 200 nits brighter than the Band 9 — making it more readable in sunlight, all for around $40.
Continuous heart rate, SpO2, stress, and sleep tracking — all running for 3 weeks before charging. Seven more days than the already impressive Band 9.
Full functionality on both platforms via the Mi Fitness app, including notifications, sleep analysis, and health trends. Bluetooth 5.4 for improved connection stability.
The right pick depends on what you optimize for.
$40 vs $799 over 3 years.
21 days vs 2.1 days battery.
12 sensors · 0.2 Hz HR sampling.
16g.
Serious athletes, trail runners, triathletes, and outdoor adventurers who need the most durable, most accurate GPS watch Apple makes. Also for iPhone users who simply want the best Apple Watch regardless of sport, and value the extra battery life over the Series 12.
Full details →Anyone who wants basic health tracking — steps, sleep, heart rate, SpO2 — without spending more than $40 or carrying a bulky watch. Works with both iPhone and Android. A popular choice for kids, older adults, and budget-conscious fitness beginners who want the world's top-selling fitness band.
Full details →