Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Garmin - Enduro 3 | Garmin - Fenix 8 CE (47mm) |
|---|---|---|
| GPS mode | 320 h | 84 h |
| Smartwatch mode | 36 days | 16 days |
| Solar charging | true | false |
| ECG | false | true |
Between the Enduro 3 and Fenix 8 CE (47mm), the Enduro 3 comes out ahead in gps mode / smartwatch mode, while the Fenix 8 CE (47mm) wins on ecg. Overall, the Enduro 3 scores 82.6 and the Fenix 8 CE (47mm) scores 70.6 on our Mars Score.
Which should you buy?
The Enduro 3 is the clear pick on raw spec strength, leading by 12.0 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Enduro 3 if you care most about gps mode / smartwatch mode. The biggest gaps in its favor are gps mode, smartwatch mode, solar charging. The single most decisive one: GPS mode — 280.95% more. 320 h vs 84 h.
Pick the Fenix 8 CE (47mm) if you care most about ecg. Its strongest claims are ecg. The single most decisive one: Has ECG.
Both ship with comparable multi-band gps, so those specs do not separate the two — focus on the differences below.
Bottom line: the Enduro 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: Garmin - Enduro 3 or Garmin - Fenix 8 CE (47mm)?
Garmin - Enduro 3 leads the current Mars Score by 12.0 points.The more useful decision is the trade-off behind that result: compare smartwatch mode, gps mode against the way you will actually use the product.
Choose Garmin - Enduro 3 if…
Garmin - Enduro 3 has the measurable edge on battery gps hours, battery smartwatch days, has solar.
Choose Garmin - Fenix 8 CE (47mm) if…
Garmin - Fenix 8 CE (47mm) has the measurable edge on has ecg.
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 Garmin - Enduro 3 wins
- ▲GPS mode — 280.95% more. 320 h vs 84 h.
- ▲Smartwatch mode — 125.00% more. 36 days vs 16 days.
- ▲Has Solar charging.
Why Garmin - Fenix 8 CE (47mm) wins
- ▲Has ECG.
Spec comparison
GPS & Sensors
| Spec | Garmin - Enduro 3 | Garmin - Fenix 8 CE (47mm) |
|---|---|---|
| Multi-band GPS | true | true |
| Barometric altimeter | true | true |
| Heart rate | true | true |
| ECG | false | truelead |
| Pulse Ox | true | true |
Battery
| Spec | Garmin - Enduro 3 | Garmin - Fenix 8 CE (47mm) |
|---|---|---|
| Smartwatch mode | 36 dayslead | 16 days |
| GPS mode | 320 hlead | 84 h |
| Solar charging | truelead | false |
Design
| Spec | Garmin - Enduro 3 | Garmin - Fenix 8 CE (47mm) |
|---|---|---|
| Case size | 51 mmlead | 47 mm |
| Weight | 63 glead | 80 g |
| Water resistanceⓘ | 10 ATM | 10 ATM |