- See your heart rate on your wrist, no strap needed.
- Get pacing alerts, logging drills and everything you need to advance your swim.
- Know when to slow down or speed up with Critical Swim Speed.
- Your watch automatically stops when you do — done and done.
- Do it your way when you design your own workouts.
- Battery life for the whole week. That’s up to 7 days for those counting.
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