Smartwatches · Garmin
Garmin Instinct 3- Case size:
- 45 mm
- Display type:
- AMOLED
- Reference price:
- SAR 1,655
Garmin Instinct 3 vs Samsung Galaxy Watch8 40mm: which one suits you?
The two differ in 4 of the specs we have recorded, and the Samsung Galaxy Watch8 40mm is cheaper by SAR 290 (prices checked 7 Nov 2026).
Which one should you choose?
Choose the
Garmin Instinct 3 if you care about:- Charge less often through the week (18 days vs 1.7 days)
- Paying less: cheaper by SAR 290
- Lower weight: 30 g vs 53 g
- Larger display size: 1.3 in vs 1.2 in · slight difference
The deciding difference here: battery life and weight and price.
Compares recorded specs; a missing spec does not mean the feature is absent.
Smartwatches · Samsung
Samsung Galaxy Watch8 40mm- Case size:
- 40 mm
- Display size:
- 1.3 in
- Reference price:
- SAR 1,365
Key differences
Case size
45 mm40 mmDisplay size
1.2 in✓ 1.3 inBattery life
✓ 18 days1.7 days
Specifications side by side
13 of 13 specs
Scroll the table sideways to see the rest.
| Spec | | |
|---|---|---|
| Reference price | SAR 1,655 | SAR 1,365 |
| Battery life | ✓ 18 days | 1.7 days |
| Built-in GPS | Yes | Yes |
| Case size | 45 mm | 40 mm |
| Display type | AMOLED | — |
| Display size | 1.2 in | ✓ 1.3 in |
| Water resistance | 10 ATM | — |
| Weight | 53 g | ✓ 30 g |
| Blood oxygen (SpO2) | Yes | — |
| Contactless payment (NFC) | Yes | — |
| Heart-rate tracking | Yes | Yes |
| Release year | 2025 | — |
| Dimensions | 4.5 × 4.5 × 1.49 cm | — |
| App control (Wi-Fi) | Yes | — |
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Similar comparisons
Direct comparison questions
What is the difference in battery life between the Garmin Instinct 3 and the Samsung Galaxy Watch8 40mm?
Battery life is higher on the Garmin Instinct 3: 18 days vs 1.7 days on the Samsung Galaxy Watch8 40mm. If this spec is your priority, the difference favours it.
What is the difference in built-in GPS between the Garmin Instinct 3 and the Samsung Galaxy Watch8 40mm?
No difference here: built-in GPS is Yes on both.
What is the difference in case size between the Garmin Instinct 3 and the Samsung Galaxy Watch8 40mm?
Garmin Instinct 3: 45 mm; Samsung Galaxy Watch8 40mm: 40 mm. A higher value is not necessarily better for you.
What is the difference in display size between the Garmin Instinct 3 and the Samsung Galaxy Watch8 40mm?
Display size is higher on the Samsung Galaxy Watch8 40mm: 1.3 in vs 1.2 in on the Garmin Instinct 3. If this spec is your priority, the difference favours it.