Both are titanium, sapphire, eSIM and dual-frequency GPS. But your phone decides: Samsung is for Android, Apple is for iPhone only.
Short answer
Galaxy Watch Ultra2 - Snapdragon Wear Elite, 1.52" 498×498, 800 mAh, IP69K, cheaper. Apple Watch Ultra 3 - S10, up to 42 h, 5G RedCap, 100 m.
Key differences
| Spec | Samsung Galaxy Watch Ultra2 47mm LTE | Apple Watch Ultra 3 49mm GPS + Cellular |
|---|---|---|
| Display | 1.52", Super AMOLED, 498×498 | OLED, 422×514 |
| Chip | Qualcomm Snapdragon Wear Elite | Apple S10 |
| Memory | 2 GB RAM / 64 GB | 64 GB |
| Battery life | — | up to 42 h |
| Battery | 800 mAh | — |
| Connectivity | LTE, eSIM | 5G RedCap, LTE, eSIM |
| Navigation | GPS, GLONASS, Galileo, BeiDou (L1 + L5) | GPS, GLONASS, Galileo, QZSS, BeiDou (L1 + L5) |
| NFC | yes | yes |
| Sensors | heart rate, SpO2, barometer, compass, gyroscope, temperature | heart rate, SpO2, barometer, compass, gyroscope, temperature |
| Protection | 10 ATM / IP69K / MIL-STD-810H / EN13319 | 100 m / IP6X / EN13319 |
| OS | Wear OS 7 | watchOS 26 |
| Compatibility | Android 13+, Google Mobile Services | iPhone 11 / iPhone SE 2 / iOS 26 |
| Dimensions, weight | 47.4×47.1×10.7 mm, 61.5 g | 49×44×12 mm, 61.6 g |
| Price | current prices | current prices |
Specs come from the device pages on Smartphone.ua.
Compatibility
Galaxy - Android 13+ with Google services. Apple - iPhone 11 and newer only.
Protection
10 ATM, IP69K, MIL-STD-810H and EN13319 vs 100 m, IP6X and EN13319.
Case
47.4×47.1×10.7 mm vs 49×44×12 mm, both around 61.5 g.
Verdict: who should buy which
- For Android - Galaxy Watch Ultra2.
- For iPhone - Apple Watch Ultra 3.
FAQ
Do both have eSIM?
Yes.
Is there dual-frequency GPS?
Yes, L1 + L5 on both.
Which is cheaper?
The Galaxy Watch Ultra2.