Apple - Watch Series 11 (45mm) vs Samsung - Galaxy Watch Ultra 2

The Watch Series 11 (45mm) is the clear pick on raw spec strength, leading by 9.7 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.

Pick the Watch Series 11 (45mm) if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are display size, weight.

Pick the Galaxy Watch Ultra 2 if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. Its strongest claims are battery life, water resistance.

Both ship with comparable ecg, cellular, spo2, so those specs don't separate the two — focus on the differences below.

Bottom line: the Watch Series 11 (45mm) is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.