Galaxy Watch8 vs Galaxy Watch Ultra (2025): which should you buy?

Answer worked out Oct. 31, 2026

Galaxy Watch8 price: Checked Oct. 31, 2026

Galaxy Watch Ultra (2025) price: Checked Oct. 31, 2026

Most people: get the Galaxy Watch Ultra (2025), because it does more than the Galaxy Watch8.

Get the Galaxy Watch8 if you want running and workouts and heart rate and sleep.

Get the Galaxy Watch Ultra (2025) for outdoors and hiking.

Get the Galaxy Watch8 to save $375.

I'm looking for
My phone

Galaxy Watch8 vs Galaxy Watch Ultra (2025)

Galaxy Watch8
SAMSUNG

Galaxy Watch8

$275 at Amazon
Galaxy Watch Ultra (2025)
SAMSUNG

Galaxy Watch Ultra (2025)

$649.99 at Samsung
  1. Galaxy Watch8: 5ATMWater resistance+5 ATMGalaxy Watch Ultra (2025): 10ATM
  2. Galaxy Watch8: AMOLED, 3,000 nitsDisplayGalaxy Watch Ultra (2025): AMOLED 3000 nits
  3. Galaxy Watch8: Up to 30 hrs (40mm) / 40 hrs (44mm)BatteryGalaxy Watch Ultra (2025): 80 hrs (590mAh)
  4. Galaxy Watch8: 30.0g (40mm), 34.0g (44mm)WeightGalaxy Watch Ultra (2025): 60.5g
  5. Galaxy Watch8: $275Price today$374.99 apartGalaxy Watch Ultra (2025): $649.99

The Galaxy Watch Ultra (2025) costs $374.99 more than the Galaxy Watch8 today ($649.99 at Samsung against $275 at Amazon).

Galaxy Watch8
28% OFFBuy at Amazon$275
We may earn a commission.
Galaxy Watch Ultra (2025)
Buy at Samsung$649.99
We may earn a commission.
All the details

Key differences

  • Water resistance: 5ATM vs 10ATMGalaxy Watch8: 5ATM (5ATM · IP68) ConfirmedSourceGalaxy Watch Ultra (2025): 10ATM (10ATM · IP68) ConfirmedSource

From each maker's own specifications. A point is listed only when both makers state a figure and the two differ; a point either maker does not state is left out, never guessed. Two figures measured under different conditions are shown side by side, not compared.

Who should buy which

  • The Galaxy Watch8 Guide names it for sleep and fitness.Sleep: Sleep coaching guides your nights, and FDA-cleared detection checks for signs of sleep apnea. Source linkedSourceFitness: Workouts anywhere: it is built to MIL-STD-810H and IP68, with 30 hours per charge. Source linkedSource
  • The Galaxy Watch Ultra (2025) Guide names it for outdoor adventure and everyday use.Outdoor adventure: Rated 10 ATM and IP68, the 47mm titanium case and 3,000-nit screen are ready for long days outside. Our readEveryday use: Built-in LTE keeps it working away from your phone, and it goes up to 48 hours between charges. Our read

From what each Guide names the product best for. Both Guides also name health.

Side by side

FeatureGalaxy Watch8Galaxy Watch Ultra (2025)
DisplayAMOLED, 3,000 nitsAMOLED 3000 nitsSamsung3,000 nitsSamsung3,000 nits
BatteryUp to 30 hrs / 40 hrs80 hrs (590mAh)Samsung30 hrsSamsung80 hrs
Weight30.0g (40mm), 34.0g (44mm)60.5gSamsung30 gSamsung60.5 g
Water resistance5ATM · IP6810ATM · IP68Samsung5 ATMSamsung10 ATM
ChipExynos W1000Exynos W1000 (3nm)
DesignSquircle aluminium47mm titanium squircle 60.5g

Galaxy Watch8

28% OFFBuy at Amazon$275
Checked Oct. 31, 2026

Galaxy Watch Ultra (2025)

Buy at Samsung$649.99
Checked Oct. 31, 2026

We may earn a commission.

Works with your phone

iPhone
Does not workDoes not work
Android
Works with limitsWorks with limits

Sources

SamsungGoogle FiSamsungSamsung
Samsung Galaxy Watch 8 vs Samsung Galaxy Watch Ultra 2