Whether you’re a professional swimmer or just love doing laps to stay fit, a waterproof fitness tracker can elevate your training by providing detailed metrics, performance insights, and even real-time coaching. In 2025, the market is saturated with swim-proof wearables, but only a few truly make a splash. This article will help you understand what to look for and recommend the top waterproof trackers specifically designed for swimmers.
Why Swimmers Need Specialised Waterproof Fitness Trackers
Swimmers face unique challenges that traditional fitness trackers aren’t built for. Here’s why you need a dedicated waterproof model:
- Water Resistance Rating: Devices must be able to handle full submersion for extended periods.
- Swim Tracking Metrics: Lengths, stroke count, SWOLF (Swim Golf), pace, and more.
- Lap Detection & Pool Length Configuration: Essential for accurate indoor swim tracking.
- Open Water GPS Support: For triathletes and open-water enthusiasts.
- Durability: Resistance to chlorine, salt water, and long-term submersion.
Top Waterproof Fitness Trackers for Swimmers in 2025
1. Garmin Swim 2
- Best for: Pool and open-water swimmers
- Key Features:
- Advanced swim metrics (stroke type, distance, pace, SWOLF)
- GPS tracking for open water
- Heart rate monitoring underwater
- Custom pool length configuration
- Battery Life: Up to 7 days in smartwatch mode, 13 hours in GPS + optical HR mode
2. Apple Watch Ultra 2
- Best for: Multisport athletes and iPhone users
- Key Features:
- Water resistance to 100m
- Dual-frequency GPS for precise outdoor swim tracking
- Auto stroke detection
- Compatible with third-party swim apps like MySwimPro
- Battery Life: Up to 36 hours (72 in Low Power Mode)
3. Fitbit Charge 6
- Best for: Casual swimmers and fitness-focused users
- Key Features:
- Water resistance up to 50m
- Basic lap counting and duration tracking
- Lightweight and budget-friendly
- Active Zone Minutes and heart rate tracking
- Battery Life: Up to 7 days
4. Form Smart Swim Goggles
- Best for: Real-time swim data with heads-up display
- Key Features:
- Smart HUD that shows pace, distance, and time mid-swim
- Connects with Garmin and Apple Watch for enhanced metrics
- Ideal for performance-driven training
- Battery Life: Up to 16 hours of swim time
5. Coros Pace 3
- Best for: Triathletes and open-water swimmers
- Key Features:
- Accurate GPS with swim-specific metrics
- Lightweight with long battery life
- Custom training plans
- Open water and pool swim support
- Battery Life: Up to 24 days in standard mode, 38 hours in GPS mode
Features to Consider Before Buying
Water Resistance Rating
Choose trackers with 5 ATM or 10 ATM ratings or those specifically marked for swimming and diving. Avoid basic splash-proof or IP-rated devices.
Stroke Recognition
Advanced devices can auto-detect your stroke (freestyle, backstroke, breaststroke, butterfly) to provide detailed analysis.
Compatibility & App Support
Make sure the device syncs with your fitness ecosystem—be it Apple Health, Google Fit, Garmin Connect, or Strava.
Real-Time Metrics
Heads-up displays or goggles that offer real-time feedback can significantly enhance training sessions.
Frequently Asked Questions (FAQs)
1. Can I wear my fitness tracker in salt water?
Yes, most swim-ready trackers are designed to handle both chlorinated and salt water. However, always rinse the device with fresh water after swimming to prevent corrosion.
2. What is SWOLF in swim tracking?
SWOLF is a metric that combines the number of strokes and the time it takes to swim a pool length. A lower SWOLF score typically indicates better swimming efficiency.
3. Do waterproof trackers measure heart rate underwater?
Only a few advanced models like the Garmin Swim 2 and Apple Watch Ultra 2 offer optical heart rate monitoring during swims, though accuracy may vary.
4. Are fitness trackers suitable for diving?
No, most are suitable for surface swimming only. If you’re a diver, look for devices rated 10 ATM or higher or specifically built for diving.
5. Do swim trackers work in open water?
Only those with built-in GPS will accurately track open-water swims. Examples include Garmin Swim 2, Coros Pace 3, and Apple Watch Ultra 2.
6. How accurate are swim trackers in counting laps?
Accuracy can vary depending on the stroke type and push-off quality, but most modern devices are accurate within 1-2 laps per session when properly configured.
Final Thoughts
Swimmers in 2025 have more options than ever when it comes to waterproof fitness trackers. Whether you’re preparing for a triathlon or just looking to improve your lap time, investing in the right wearable can revolutionise your aquatic training. Prioritise features based on your skill level, swim environment (pool vs. open water), and fitness goals to make the best choice.
Stay consistent in the pool, and let your swim tracker do the heavy lifting on performance insights.
