1. Sensor quality first
Heart-rate and SpO2 tracking quality differs by device. Look for consistency during workouts, not only feature count.
2. Battery mode options
Choose watches with flexible battery profiles for normal use, fitness mode and GPS-heavy sessions.
3. Comfort and durability
A lighter watch with proper water resistance and durable straps is easier to use daily.
4. App ecosystem
Make sure your preferred fitness apps and phone ecosystem sync smoothly before buying.