Amazfit Helio Strap vs Fitbit Air
Fitbit Air wins 3 of the 6 categories we compared, against 1 for Amazfit Helio Strap (2 tied) — including weight (5.2 g vs 20 g).
Amazfit Helio Strap vs Fitbit Air: our verdict
Go with Fitbit Air if you want something lighter and thinner that fades into the background on your wrist, while also giving you connected GPS for runs and overnight skin temperature tracking. It's the better match if comfort and a little more activity detail matter most. The trade-off is simple: you'll be charging it more often.
Helio Strap makes the most sense if your top priority is battery life, because 10 days between charges is just easier to live with. The catch is that 20 g weight and thicker build, which make it less pleasant for all-day wear and sleep.
Summarised from our video comparison of these two wearables.
Watch the video comparison
Amazfit Helio Strap vs Fitbit Air: Battery & Charging
| Spec |
 Amazfit Helio Strap
|
 Fitbit Air
|
|---|---|---|
| Battery life | 10 days | 7 days |
| Charging time | 120 min | 90 min |
| Charging | Magnetic charging head | USB-C charging cable |
Amazfit Helio Strap vs Fitbit Air: Health Sensors
| Spec |
Amazfit Helio Strap
|
Fitbit Air
|
|---|---|---|
| Heart rate | Yes | Yes |
| ECG | No | No |
| Blood oxygen (SpO2) | Yes | Yes |
| Heart rate variability | Yes | Yes |
| Skin temperature | No | Yes |
| Blood pressure alerts | No | No |
| Irregular rhythm alerts | No | Yes |
| Breathing rate | Yes | Yes |
| Sleep tracking | Yes | Yes |
| Stress tracking | Yes | Yes |
Amazfit Helio Strap vs Fitbit Air: GPS & Navigation
| Spec |
Amazfit Helio Strap
|
Fitbit Air
|
|---|---|---|
| Built-in GPS | No | No |
| Dual-band GPS | No | No |
| Offline maps | No | No |
| Barometer | No | No |
| Compass | No | No |
Amazfit Helio Strap vs Fitbit Air: Smart Features
| Spec |
Amazfit Helio Strap
|
Fitbit Air
|
|---|---|---|
| Contactless payments | No | No |
| Music storage | No | No |
| Calls from the wrist | No | No |
| Cellular (LTE) | No | No |
| Wi-Fi | No | No |
| Notifications | No | No |
| Fall detection | No | No |
| Emergency SOS | No | No |
| Software | Proprietary | FitbitOS |
| Works with | Android & iOS | Android & iOS |
| Voice assistant | No | No |
Amazfit Helio Strap vs Fitbit Air: Design & Durability
| Spec |
Amazfit Helio Strap
|
Fitbit Air
|
|---|---|---|
| Weight | 20 g | 5.2 g |
| Thickness | 10.59 mm | 8.3 mm |
| Water resistance | 50 m | 50 m |
| Military-grade toughness | No | No |
| Case size | 33.97 mm | 34.9 mm |
| Material | Plastic | Plastic |
| IP rating | — | IP68 |
Amazfit Helio Strap vs Fitbit Air: Price & Colors
| Spec |
Amazfit Helio Strap
|
Fitbit Air
|
|---|---|---|
| Subscription | — | Optional Premium, $9.99/month |
| Colors | Black | Obsidian, Berry, Lavender, Fog |
| Release year | 2025 | 2026 |
Where each one wins
Amazfit Helio Strap
- Battery life: 10 days (vs 7 days)
Fitbit Air
- Charging time: 90 min (vs 120 min)
- Skin temperature
- Irregular rhythm alerts
- Weight: 5.2 g (vs 20 g)
- Thickness: 8.3 mm (vs 10.59 mm)
Wearables Similar to Amazfit Helio Strap or Fitbit Air
Frequently Asked Questions
Which is better, the Amazfit Helio Strap or the Fitbit Air?
Fitbit Air wins 3 of the 6 categories we compared, against 1 for Amazfit Helio Strap (2 tied) — including weight (5.2 g vs 20 g).
Which is cheaper, the Amazfit Helio Strap or the Fitbit Air?
Both cost around $99, so the choice comes down to specs rather than price.
What are the main differences between the Amazfit Helio Strap and the Fitbit Air?
The biggest gaps are in battery life (10 days on the Amazfit Helio Strap vs 7 days); weight (5.2 g on the Fitbit Air vs 20 g); charging time (90 min on the Fitbit Air vs 120 min).