Samsung
Samsung Galaxy Watch9 (40 mm)
Samsung Galaxy Watch9 (40 mm) wearable normalized across health sensors, battery, comfort, durability, compatibility, and ownership cost.
Bettr Than Score · Balanced
44.8/100
WearablesOpen comparison 
Google
Protected anonymous voting
Compare wearables
Choose products to compare
VS
Google Fitbit Air
Google Fitbit Air wearable normalized across health sensors, battery, comfort, durability, compatibility, and ownership cost.
Bettr Than Score · Balanced
55.2/100
Category-specific score
What matters most to you?
Value, endurance, comfort, durability, and broadly useful health sensors.
Samsung Galaxy Watch9 (40 mm)
44.8 / 100
Google Fitbit Air
55.2 / 100
100% supported scoring weight · 15 shared fields.
How this score works
- Reference price: 20% · Google Fitbit Air has the favorable value
- Advertised battery life: 20% · Google Fitbit Air has the favorable value
- Device weight: 15% · Google Fitbit Air has the favorable value
- Water resistance: 10% · equal
- Built-in GPS: 8% · Samsung Galaxy Watch9 (40 mm) has the favorable value
- Continuous heart rate: 5% · equal
- ECG capability: 7% · Samsung Galaxy Watch9 (40 mm) has the favorable value
- Blood oxygen sensing: 5% · equal
- Temperature sensing: 5% · Samsung Galaxy Watch9 (40 mm) has the favorable value
- Sleep tracking: 5% · equal
Device type, phone compatibility, fit, coaching quality, and medical availability are personal or regional. A missing or inapplicable feature is excluded rather than treated as a loss.
Side-by-side specifications
| Samsung Galaxy Watch9 (40 mm) | Specification | Google Fitbit Air |
|---|---|---|
$379.99 | Reference price | $99.99 |
smartwatch | Device type | fitness-tracker |
1.67 days | Advertised battery life | 7 days |
30 g | Device weight | 12 g |
50 m | Water resistance | 50 m |
Yes | Built-in GPS | No |
Yes | Continuous heart rate | Yes |
Yes | ECG capability | No |
Yes | Blood oxygen sensing | Yes |
Yes | Temperature sensing | No |
Yes | Sleep tracking | Yes |
Yes | On-device display | No |
No | iPhone support | Yes |
Yes | Android support | Yes |
None | Required subscription | None |
Evidence-based guidance · Balanced model
Google Fitbit Air leads on the balanced wearables model
Based on 15 shared sourced fields and 100% balanced scoring coverage. Device type, phone compatibility, fit, coaching quality, and medical availability are personal or regional. A missing or inapplicable feature is excluded rather than treated as a loss.
Consider Samsung Galaxy Watch9 (40 mm) for built-in gps (Yes), ecg capability (Yes), temperature sensing (Yes).
Consider Google Fitbit Air for reference price ($99.99), advertised battery life (7 days), device weight (12 g).
People's Pick
Which one would you choose?
Loading voting options…
Where to buy Samsung Galaxy Watch9 (40 mm)
We may earn a commission when you buy through links marked “Affiliate link.” This does not change your price or our scores. How we earn
No verified retailer offers are available yet.
Prices and availability can change. Totals exclude tax. Lowest-listed labels compare only fresh, in-stock offers with known shipping in the same currency. Sponsored status never changes their order.
Where to buy Google Fitbit Air
We may earn a commission when you buy through links marked “Affiliate link.” This does not change your price or our scores. How we earn
No verified retailer offers are available yet.
Prices and availability can change. Totals exclude tax. Lowest-listed labels compare only fresh, in-stock offers with known shipping in the same currency. Sponsored status never changes their order.
Keep comparing
Apple Watch Series 12 (46 mm GPS) vs Samsung Galaxy Watch9 (40 mm)Apple Watch Series 12 (46 mm GPS) vs Google Fitbit AirApple Watch Ultra 4 vs Samsung Galaxy Watch9 (40 mm)Apple Watch Ultra 4 vs Google Fitbit AirGoogle Pixel Watch 5 (41 mm) vs Samsung Galaxy Watch9 (40 mm)Google Pixel Watch 5 (41 mm) vs Google Fitbit Air