First-generation product — no historical cycle data to predict a successor
Full details →| Fitbit Air | Xiaomi Smart Band 11 | |
|---|---|---|
| Pricing | ||
| Starting price | $99 | $67★ |
| Subscription | ℹ️ Optional — $99/yr | ✓ None |
| Hardware | ||
| Weight | 12g★ | 16g |
| Water resistance | 50m | 5ATM |
| Battery | 7 days | 21 days★ |
| Always-on display | ❌ | ✅★ |
| GPS | ❌ | ❌ |
| Cellular | ❌ | ❌ |
| Platform | iOS & Android | iOS & Android |
| Tier | Fitness Tracker | Fitness Tracker |
| Buy timing | ||
| Released | May 26, 2026 | Oct 27, 2026 |
| Cycle advice | good | good |
| Deals advice | great★ | neutral |
| Next model | — | — |
Unlike WHOOP, there is no mandatory membership — pay $99 once and use Fitbit Air with the free Google Health app. Google Health Premium ($9.99/month) is optional.
Continuous heart rate, SpO2, HRV, and skin temperature tracking plus background FDA-certified AFib detection, in a 12g pebble designed to be worn and forgotten.
A week between charges, with a 5-minute top-up delivering a full day of use — significantly less downtime than WHOOP's slide-on charging system.
The Smart Band 11 keeps the 1.72" screen size but raises peak brightness to 2,000 nits, up from 1,500 on the Band 10, so it is easier to read in direct sunlight.
Continuous heart rate, SpO2, stress, and sleep tracking, with Xiaomi rating the battery at up to 21 days between charges, the same as the Band 10.
A €79.99 NFC version adds contactless payments where your bank and payment service support it. Both versions work with the Mi Fitness app on iOS and Android for notifications, sleep analysis, and health trends.
The right pick depends on what you optimize for.
$67 vs $396 over 3 years.
21 days vs 7 days battery.
5 sensors · 0.5 Hz HR sampling.
12g.
Health-focused users who want passive, 24/7 biometric tracking without a screen on their wrist. Particularly strong for those drawn to WHOOP but put off by the subscription model — the Fitbit Air delivers comparable core health data for $99 outright. Works with both iOS and Android.
Full details →Anyone who wants basic health tracking (steps, sleep, heart rate, SpO2) without spending much or wearing a bulky watch. Works with both iPhone and Android. A common choice for kids, older adults, and fitness beginners on a budget. Buyers in Europe who want tap-to-pay can pick the NFC version.
Full details →