Can I use my fitness tracker in saltwater?

If it is rated 5 ATM or higher, yes. However, always rinse with fresh water after saltwater exposure to prevent corrosion. Salt deposits can damage buttons, speakers, and charging contacts over time.

How does swim tracking detect my stroke type?

Accelerometers and gyroscopes analyze your arm movement patterns. Each stroke type (freestyle, backstroke, breaststroke, butterfly) has a distinct motion signature. Most trackers identify stroke type with 90%+ accuracy for consistent swimmers.

Best Fitness Trackers for Swimming 2026