Garmin Descent Mk3i vs Garmin Fenix 8
6 recorded spec differences. Garmin Fenix 8 is currently the cheaper of the two on Amazon.sa (SAR 8,499 vs SAR 6,289, checked 1 Nov 2026).
Specifications side by side
| Spec | Garmin Descent Mk3i | Garmin Fenix 8 |
|---|---|---|
| Phone, battery and calls | ||
| Battery life | 25 days | 16 days |
| Cellular (LTE/eSIM) | — | No |
| Bluetooth calls | — | Yes |
| Built-in GPS | Yes | Yes |
| Size, screen and durability | ||
| Case size | 51 mm | 47 mm |
| Water resistance | 20 ATM | 10 ATM |
| Weight | 166 g | 73 g |
| Display type | AMOLED | AMOLED |
| Display size | 1.4 in | 1.4 in |
| Case material | Titanium | Titanium |
| Health and payments | ||
| ECG | No | Yes |
| Heart-rate tracking | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| Contactless payment (NFC) | Yes | Yes |
| Other specs | ||
| Release year | 2023 | 2024 |
| Dimensions | 5.1 × 5.1 × 1.64 cm | — |
| App control (Wi-Fi) | Yes | Yes |
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