Best Waterproof Smartwatch & Fitness Tracker 2025

Looking for a reliable waterproof fitness tracker or smartwatch? Here's a complete breakdown of the best wearables in 2025 based on battery life, accuracy, design, and water resistance. Ideal for swimmers, runners, and everyday users.

Why Waterproof Fitness Trackers Matter

Waterproof fitness trackers allow you to monitor health metrics during swimming, showers, and rainy workouts. Devices with at least a 5 ATM rating can be submerged up to 50 meters, making them ideal for active lifestyles.

How to Choose the Right Device

Top 5 Waterproof Fitness Devices

1. Fitbit Charge 6

  • Waterproof rating: 5 ATM
  • Battery life: 7 days
  • ECG, heart rate, and stress tracking
  • Buy Now on Amazon

2. Apple Watch SE 2nd Gen

  • Swimproof: Up to 50m
  • Battery life: 18 hours
  • Sleep, fall, and heart rate tracking
  • Buy Now on Amazon

3. Garmin Vivosmart 5

  • Water-resistant: 5 ATM
  • Battery life: 7 days
  • Pulse Ox and Body Battery monitoring
  • Buy Now on Amazon

4. Amazfit GTR 4

  • Water resistance: 5 ATM
  • Battery: 14 days
  • Heart rate, SpO2, sleep, and PAI system
  • Buy Now on Amazon

5. Samsung Galaxy Watch 6

  • Waterproof: 5 ATM + IP68
  • Battery: 40 hours
  • ECG, BP monitor, BIA sensor
  • Buy Now on Amazon
comparison of waterproof smartwatches with ECG and long battery life
Visual comparison of 2025’s best smartwatches with ECG, SpO2, and waterproof design.

Comparison Table

Model Waterproof Battery ECG Amazon
Fitbit Charge 65 ATM7 daysYesLink
Apple Watch SE 250m18 hrsNoLink
Garmin Vivosmart 55 ATM7 daysNoLink
Amazfit GTR 45 ATM14 daysNoLink
Galaxy Watch 65 ATM + IP6840 hrsYesLink

FAQs

Can I wear these while swimming daily?

Yes. Devices with 5 ATM are built for swimming and water sports.

Do smartwatches track heart rate underwater?

Most premium trackers continue monitoring heart rate under water.

Is ECG available in budget models?

ECG is mostly found in mid to high-end models like Fitbit Charge 6 and Galaxy Watch 6.

Common Mistakes to Avoid

Final Thoughts

If you're active, you need a waterproof tracker. Our list includes the best models for every budget and need. Swimmers should aim for 5 ATM or better. Long-distance runners may prefer longer battery life.