Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Google - Fitbit Luxe | Samsung - Galaxy Fit 3 |
|---|---|---|
| Battery life | 5 days | 13 days |
| Sport modes | 20 | 100 |
Between the Fitbit Luxe and Galaxy Fit 3, the Fitbit Luxe comes out ahead in several specs, while the Galaxy Fit 3 wins on battery life / sport modes. Overall, the Fitbit Luxe scores 63.2 and the Galaxy Fit 3 scores 70.9 on our Mars Score.
Which should you buy?
The Galaxy Fit 3 edges ahead on the Mars Score (63.2 vs 70.9), but the 7.7-point gap is small enough that the right pick comes down to which spec advantages matter to you.
The Fitbit Luxe does not pull ahead on any single popular-comparison spec — its strengths sit in the spec-table groups rather than the headline advantages.
Pick the Galaxy Fit 3 if you care most about battery life / sport modes. Its strongest claims are battery life, sport modes. The single most decisive one: Battery life — 160.00% more. 13 days vs 5 days.
Both ship with comparable gps, spo2, water resistance, so those specs do not separate the two — focus on the differences below.
Bottom line: the Galaxy Fit 3 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Google - Fitbit Luxe or Samsung - Galaxy Fit 3?
Samsung - Galaxy Fit 3 leads the current Mars Score by 7.7 points.The more useful decision is the trade-off behind that result: compare battery life against the way you will actually use the product.
Choose Google - Fitbit Luxe if…
Google - Fitbit Luxe does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose Samsung - Galaxy Fit 3 if…
Samsung - Galaxy Fit 3 has the measurable edge on battery days, sport modes.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Google - Fitbit Luxe wins
- No decisive advantages.
Why Samsung - Galaxy Fit 3 wins
- ▲Battery life — 160.00% more. 13 days vs 5 days.
- ▲Sport modes — 80.00 more. 100 vs 20.
Spec comparison
Fitness
| Spec | Google - Fitbit Luxe | Samsung - Galaxy Fit 3 |
|---|---|---|
| Form factor | Band | Band |
| GPS | false | false |
| Heart rate | true | true |
| SpO2 | true | true |
| Sleep tracking | true | true |
| Sport modes | 20 | 100lead |
Battery
| Spec | Google - Fitbit Luxe | Samsung - Galaxy Fit 3 |
|---|---|---|
| Battery lifeⓘ | 5 days | 13 dayslead |
| Water resistanceⓘ | 5 ATM | 5 ATM |
Design
| Spec | Google - Fitbit Luxe | Samsung - Galaxy Fit 3 |
|---|---|---|
| Display size | 0.76 " | 1.6 "lead |
| Weight | 23 g | 18.5 glead |