Samsung Galaxy Watch Ultra 47mm vs Garmin Descent Mk3i: which one suits you?

The two differ in 6 of the specs we have recorded, and the Samsung Galaxy Watch Ultra 47mm is cheaper by SAR 5,616 (prices checked 5 Nov 2026).

Which one should you choose?

  • Paying less: cheaper by SAR 5,616
  • Charge less often through the week (2 days vs 1 days)
  • Has ECG; the other doesn't
  • Lower weight: 62 g vs 104 g
  • Higher water resistance for swimming and showers (20 ATM vs 10 ATM)

The deciding difference here: battery life and ECG and price.

Compares recorded specs; a missing spec does not mean the feature is absent.

Key differences

  • Case size

    47 mm51 mm
  • Display type

    Super AMOLEDAMOLED
  • Battery life

    ✓ 2 days1 days

Specifications side by side

16 of 16 specs

Scroll the table sideways to see the rest.

Spec
SamsungSAR 1,363
Samsung Galaxy Watch Ultra 47mm specs
GarminSAR 6,979
Garmin Descent Mk3i specs
Reference priceSAR 1,363SAR 6,979
Battery life✓ 2 days1 days
Cellular (LTE/eSIM)Yes—
Bluetooth callsYes—
Built-in GPSYesYes

Facts come from each Amazon.sa listing. As an Amazon Associate we earn from qualifying purchases. Buying through our links costs you nothing extra.

Before you buy

Prices, availability, shipping and returns can change. Check the final details on Amazon.sa before you buy.

Similar comparisons

Direct comparison questions

What is the difference in battery life between the Samsung Galaxy Watch Ultra 47mm and the Garmin Descent Mk3i?

Battery life is higher on the Samsung Galaxy Watch Ultra 47mm: 2 days vs 1 days on the Garmin Descent Mk3i. If this spec is your priority, the difference favours it.

What is the difference in built-in GPS between the Samsung Galaxy Watch Ultra 47mm and the Garmin Descent Mk3i?

No difference here: built-in GPS is Yes on both.

What is the difference in case size between the Samsung Galaxy Watch Ultra 47mm and the Garmin Descent Mk3i?

Samsung Galaxy Watch Ultra 47mm: 47 mm; Garmin Descent Mk3i: 51 mm. A higher value is not necessarily better for you.

What is the difference in water resistance between the Samsung Galaxy Watch Ultra 47mm and the Garmin Descent Mk3i?

Water resistance is higher on the Garmin Descent Mk3i: 20 ATM vs 10 ATM on the Samsung Galaxy Watch Ultra 47mm. If this spec is your priority, the difference favours it.