The Google Fitbit Air has no screen, but it is busy all day and night. Behind the textile band sit an optical heart rate sensor, red and infrared sensors for blood oxygen (SpO2), a temperature sensor and motion sensors. Together they feed health numbers into the Google Health app, including AFib alerts, heart rate variability (HRV), SpO2 and skin-temperature variation.
These numbers are useful, but they are easy to misread. This guide explains what each one means, what it does not mean, and how to use them sensibly if you live in Dubai or anywhere in the UAE.
Important: The Fitbit Air is a wellness device. AFib alerts are not a medical diagnosis. If you are worried about your health, speak to a doctor.
What the Fitbit Air measures
According to Google's official product and spec pages, the Fitbit Air tracks heart rate around the clock (stored at 2-second intervals), steps, Active Zone Minutes, distance and calories. It also tracks sleep (Sleep Score and sleep stages), resting heart rate, breathing rate, HRV, SpO2 and skin-temperature variation. It uses these to build your daily Readiness score and Cardio Load.
| Metric | What it shows | When it is most useful |
|---|---|---|
| AFib (irregular rhythm) alerts | Signs of an irregular heartbeat that may be atrial fibrillation | Checked while you are still or asleep |
| Resting heart rate | Your heart rate at rest | Watching trends over weeks |
| HRV | Variation in time between heartbeats | Recovery and stress trends |
| SpO2 | Estimated oxygen level in your blood | Overnight trends |
| Skin temperature variation | Change from your own baseline, not your exact temperature | Spotting nights that look different from normal |
| Breathing rate | Breaths per minute, mostly during sleep | Long-term trends |
AFib alerts: how they work
Atrial fibrillation (AFib) is a common type of irregular heart rhythm. Google's help pages explain that the irregular rhythm feature uses pulse data from your wrist, gathered while you are still or asleep. Your data is checked after it syncs to the app, not in real time. You only get a notification when signs of an irregular rhythm show up in several readings.
- Set it up yourself: In the Google Health app, open the Health tab, tap Irregular rhythm under Health checks, then tap Set Up.
- Age limit: Google says the feature is not intended for people under 22.
- Not for people already diagnosed with AFib.
- No alert does not mean all clear. Google states that the absence of a notification does not mean you do not have AFib.
- Availability: Google says the feature is only offered in select locations. Check inside the app whether it is turned on for your account in the UAE.
If you do get a notification, Google's advice is to talk to your doctor. Do not change any medication without medical advice.
HRV, SpO2 and skin temperature: read trends, not single days
These three metrics are most helpful as trends against your own baseline. One odd night means very little. On Fitbit devices, SpO2 and skin temperature are usually estimated while you sleep, so wear the tracker to bed for the most complete picture.
- HRV often drops after hard training, poor sleep, illness, stress or late heavy meals. A few low days in a row can be a sign to take it easier. It also feeds your Readiness score. Read our Readiness & Cardio Load guide for more.
- SpO2 is an estimate from light-based sensors. Fit, skin tone, movement and band position can all affect it.
- Skin temperature variation shows how your nights compare with your normal, not your body temperature.
UAE tips for better readings
- Wear it snug, a finger-width above the wrist bone. Optical sensors need good skin contact. The band fits wrists from about 130 to 210 mm.
- Keep the sensor clean. UAE heat means sweat, sunscreen and sand. Rinse the tracker with fresh water after the gym, pool or beach and dry it before bed.
- Mind the AC. Very cold bedrooms and very hot days can shift skin temperature. Look at how the trend moves, not one reading.
- Sync daily. AFib checks happen after your data syncs, so open the Google Health app regularly. Your phone needs Bluetooth and an internet connection.
- Be consistent. Wear it most nights. Baselines take time to build, and gaps make trends harder to read.
Which Fitbit Air should you choose?
All Fitbit Air models have the same sensors and health features. The difference is the colour and buckle finish. Current prices at Babar Dewan Electronics:
- Fitbit Air – Obsidian (matte black buckle): AED 481.95
- Fitbit Air – Fog (polished silver buckle): AED 481.95
- Fitbit Air – Berry (champagne gold buckle): AED 481.95
- Fitbit Air – Lavender (polished silver buckle): AED 498.75
- Fitbit Air – Rye, Stephen Curry Special Edition (pyrite buckle, sweatproof band coating): AED 677.25
Prices may change, so check the product page or message us on WhatsApp +971 52 117 6995 to confirm before ordering. Buying for a team or a corporate wellness programme? See our wholesale page.
FAQ
Can the Fitbit Air diagnose AFib?
No. It can notify you about signs of an irregular rhythm that may be AFib. Only a doctor can diagnose AFib, usually with tests such as an ECG.
Do I need Google Health Premium for AFib alerts or HRV?
Core tracking on the Fitbit Air is free in the Google Health app. Google Health Premium is optional and adds the Gemini-powered Health Coach and extra insights. Feature availability can vary by country, so check in the app.
Why is my SpO2 or skin temperature missing some nights?
These readings need steady wear during sleep. A loose band, a low battery or taking the tracker off at night can leave gaps.
Will my phone work with it?
Google lists Android 11 or newer and iOS 16.4 or newer, plus a Google Account and the Google Health app. The Fitbit Air setup guide walks you through pairing.
Questions before you buy? Contact us or order on WhatsApp.
The Fitbit Air is a wellness device and is not intended to diagnose or treat any medical condition. AFib alerts are not a medical diagnosis. Seek medical advice if you have health concerns, and call emergency services in an emergency.
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