Garmin Fenix 8 vs Garmin Descent Mk3i
5 recorded spec differences. Garmin Fenix 8 is currently the cheaper of the two on Amazon.sa (SAR 6,289 vs SAR 6,979, checked 1 Nov 2026).
Specifications side by side
| Spec | Garmin Fenix 8 | Garmin Descent Mk3i |
|---|---|---|
| Phone, battery and calls | ||
| Battery life | 16 days | 1 days |
| Cellular (LTE/eSIM) | No | — |
| Bluetooth calls | Yes | — |
| Built-in GPS | Yes | Yes |
| Size, screen and durability | ||
| Case size | 47 mm | 51 mm |
| Water resistance | 10 ATM | 20 ATM |
| Case material | Titanium | — |
| Weight | 73 g | 104.3 g |
| Display type | AMOLED | AMOLED |
| Display size | 1.4 in | 1.4 in |
| Health and payments | ||
| ECG | Yes | No |
| Heart-rate tracking | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| Contactless payment (NFC) | Yes | Yes |
| Other specs | ||
| Release year | 2024 | — |
| App control (Wi-Fi) | Yes | — |
Highlighted rows differ. Facts come from each Amazon.sa listing. As an Amazon Associate we earn from qualifying purchases. Buying through our links costs you nothing extra.