Apple Watch Ultra 3: The Rugged Flagship Refined
After 4 weeks including a marathon and hiking, here's our verdict on the Ultra 3.
Health Sensors
Gen 5 heart rate sensor is 15% more accurate during high-intensity exercise. Within 3 BPM vs chest strap, compared to 8 BPM for the Ultra 2.
Display
3,500-nit peak brightness (up from 3,000) makes it the most readable smartwatch in sunlight.
Battery
With always-on display and GPS 3x/week: 34 hours. Low Power Mode survived 68 hours on a 3-day hike.
Durability
Titanium and sapphire crystal remain scratch-free. Water resistance to 100m verified.
Verdict
Best smartwatch for athletes. Ultra 2 owners appreciate sensor gains; Series 9/10 users gain ruggedness.
