Polar Vantage M3 vs Garmin Instinct 3 Tactical: which one suits you?
The two differ in 8 of the specs we have recorded, and the Garmin Instinct 3 Tactical is cheaper by SAR 196 (prices checked 5 Nov 2026).
Which one should you choose?
Choose the
Polar Vantage M3 if you care about:- Has ECG; the other doesn't
- Lower weight: 53 g vs 59 g · slight difference
- Paying less: cheaper by SAR 196
- Larger display size: 1.97 in vs 1.28 in
- Charge less often through the week (24 days vs 7 days)
- Has contactless payment (NFC); the other doesn't
The deciding difference here: display size and battery life and price.
Compares recorded specs; a missing spec does not mean the feature is absent.
Smartwatches · Garmin
Garmin Instinct 3 Tactical- Case size:
- 50 mm
- Display type:
- AMOLED
- Reference price:
- SAR 2,095
Key differences
Case size
45 mm50 mmDisplay size
1.28 in✓ 1.97 inBattery life
7 days✓ 24 days
Specifications side by side
13 of 13 specs
Scroll the table sideways to see the rest.
| Spec | | |
|---|---|---|
| Reference price | SAR 2,291 | SAR 2,095 |
| Battery life | 7 days | ✓ 24 days |
| Built-in GPS | Yes | Yes |
| Case size | 45 mm | 50 mm |
| Display size | 1.28 in | ✓ 1.97 in |
| Water resistance | 5 ATM | ✓ 10 ATM |
| Case material | Stainless steel | fiber-reinforced polymer |
| Weight | ✓ 53 g | 59 g |
| Display type | AMOLED | AMOLED |
| ECG | ✓ Yes | No |
| Blood oxygen (SpO2) | — | Yes |
| Contactless payment (NFC) | No | ✓ Yes |
| Heart-rate tracking | Yes | Yes |
| Dimensions | 4.5 x 4.5 x 1.2 cm | — |
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Direct comparison questions
What is the difference in battery life between the Polar Vantage M3 and the Garmin Instinct 3 Tactical?
Battery life is higher on the Garmin Instinct 3 Tactical: 24 days vs 7 days on the Polar Vantage M3. If this spec is your priority, the difference favours it.
What is the difference in built-in GPS between the Polar Vantage M3 and the Garmin Instinct 3 Tactical?
No difference here: built-in GPS is Yes on both.
What is the difference in case size between the Polar Vantage M3 and the Garmin Instinct 3 Tactical?
Polar Vantage M3: 45 mm; Garmin Instinct 3 Tactical: 50 mm. A higher value is not necessarily better for you.
What is the difference in water resistance between the Polar Vantage M3 and the Garmin Instinct 3 Tactical?
Water resistance is higher on the Garmin Instinct 3 Tactical: 10 ATM vs 5 ATM on the Polar Vantage M3. If this spec is your priority, the difference favours it.