Apple Watch SE 3 vs SE 2: Three Changes, Same Core Watch

The Apple Watch SE 3 lands with exactly three upgrades over its predecessor: a refreshed design, ovulation cycle estimates, and improved connectivity. That's the full list. For endurance athletes already running with the SE 2, that's a thin case for spending again.

The connectivity bump matters most on paper. Faster GPS lock and more reliable signal during workouts would be real gains, especially on trail runs where tree cover kills accuracy. But the SE 3 still lacks the precision of a dedicated running watch. Garmin Forerunner 165 at a similar price point gives you multiband GPS, training load metrics, and HRV status. The SE 3 doesn't touch that.

The ovulation estimates are a legitimate addition for female athletes tracking hormonal impact on performance and recovery. Polar and Garmin have offered cycle tracking with training guidance for years. Apple is catching up, not leading. Still, having it natively on the wrist without a third-party app is cleaner.

The visual refresh is subjective. Thinner bezels look sharper. But if you're buying a sport watch, aesthetics sit well below GPS accuracy, battery life, and training data quality on the priority list. SE 3 battery still caps around 18 hours, nowhere near Coros Pace 3 territory at 38 hours GPS-on.

Skip the upgrade if you own an SE 2. The SE 3 makes sense only as a first Apple Watch buy or a replacement for a broken unit.