Whether you swim laps, do aqua workouts, or train for triathlons, a waterproof Fitbit can help you track every movement underwater. The latest models combine precise swim tracking with heart-rate monitoring and long battery life. This guide compares the best swim-ready Fitbits available right now, including free app options and premium devices.
Methodology: What matters and why
To rank the best waterproof Fitbits for swimming, we evaluated each model using five main factors: water resistance, swim-tracking accuracy, comfort, battery endurance, and overall value. Devices needed at least a 5 ATM (50-meter) water resistance rating and verified swim metrics in the Fitbit app to qualify.
We also considered usability underwater, including visibility, button response, and ease of syncing after sessions. Finally, price and fitness versatility played a role – our list includes both premium smartwatches and affordable trackers suited for casual swimmers.
1) Fitbit Sense 2
The Fitbit Sense 2 is the brand’s most advanced smartwatch. It combines swim tracking with comprehensive health tools like ECG, skin temperature, and stress monitoring. The large AMOLED display remains readable underwater, making it perfect for training in both pool and open-water environments.
Its 6-day battery life supports multiple workouts before needing a recharge. The watch automatically detects swimming activity, tracks laps, and estimates SWOLF scores for efficiency analysis. Integration with the Fitbit app gives detailed insights into pace and stroke performance.
It’s a solid choice for swimmers who also want full wellness tracking and premium build quality. The aluminum case feels durable, while the water-lock mode prevents screen touches when submerged.
- Standout feature: Advanced swim and health tracking with premium sensors.
- Ideal user: Regular swimmers and fitness enthusiasts seeking all-day tracking.
- Notable limitation: Higher price compared to entry-level Fitbits.
2) Fitbit Versa 4
The Versa 4 focuses on performance and usability. It offers accurate lap counting, pace tracking, and calorie estimation during swims. The design feels lightweight and comfortable for long sessions in the pool or ocean.
Its touchscreen remains responsive underwater, and you can view progress metrics at a glance. With up to six days of battery life, it delivers reliable tracking without constant charging. Built-in GPS ensures location accuracy for open-water swimming.
Thanks to Fitbit Premium integration, users can unlock detailed workout analytics and guided recovery tools. It’s one of the most balanced waterproof Fitbits for both casual and competitive swimmers.
- Standout feature: Built-in GPS and swim mode with real-time lap feedback.
- Ideal user: Swimmers who want detailed stats and daily fitness tracking.
- Notable limitation: Premium subscription required for full data insights.
3) Fitbit Charge 6
The Charge 6 is Fitbit’s compact powerhouse. Despite its slim size, it supports full swim tracking with lap detection and distance metrics. It includes a bright display that remains visible under direct sunlight and underwater.
Built-in GPS makes it ideal for open-water swimming, while the optical heart-rate sensor remains surprisingly accurate underwater. Its 7-day battery life means you can go a full week without charging, even with frequent swim sessions.
Perfect for users who want smartwatch-level performance in a fitness band design, the Charge 6 provides reliable waterproof performance at a moderate price.
- Standout feature: Compact form with GPS and heart-rate accuracy underwater.
- Ideal user: Swimmers seeking a minimalist tracker with robust metrics.
- Notable limitation: Smaller screen limits underwater readability.
4) Fitbit Versa 3
While slightly older, the Versa 3 remains a dependable waterproof smartwatch. It offers full swim mode compatibility with up to 50 meters of water resistance. The display is bright and responsive, with customizable faces to show lap and distance data.
It also supports voice assistants, built-in GPS, and continuous heart-rate tracking. These features make it versatile for athletes who transition between pool workouts and land training. Its battery lasts around 5–6 days on average use.
The Versa 3 still receives firmware updates and connects seamlessly with Fitbit’s app ecosystem. It’s a great midrange option for swimmers who want solid performance without paying flagship prices.
- Standout feature: Balanced swim-tracking smartwatch with GPS and voice controls.
- Ideal user: Intermediate swimmers seeking an affordable all-rounder.
- Notable limitation: Lacks some advanced health sensors found in newer models.
5) Fitbit Inspire 3
The Inspire 3 is the most budget-friendly waterproof Fitbit you can buy. It’s light, durable, and simple to use, making it ideal for casual swimmers. The device automatically recognizes swimming activity and logs duration and calorie burn.
Its bright AMOLED display is small but visible enough for quick glances during laps. With 10-day battery life, it outlasts all other models on this list. The silicone band resists chlorine and salt, ensuring durability over time.
While it lacks GPS and advanced metrics, Inspire 3 covers the basics perfectly for anyone starting a swimming fitness routine. It’s also the lightest option, making it comfortable for all-day wear.
- Standout feature: Lightweight design with automatic swim recognition.
- Ideal user: Casual swimmers and beginners looking for simplicity.
- Notable limitation: No GPS or detailed lap analysis features.
Comparison table
| Model | Water Resistance | Battery Life | Swim Tracking | GPS |
|---|---|---|---|---|
| Fitbit Sense 2 | 5 ATM | 6 days | Yes (laps, SWOLF) | Yes |
| Fitbit Versa 4 | 5 ATM | 6 days | Yes (laps, pace) | Yes |
| Fitbit Charge 6 | 5 ATM | 7 days | Yes (laps, distance) | Yes |
| Fitbit Versa 3 | 5 ATM | 6 days | Yes (laps, distance) | Yes |
| Fitbit Inspire 3 | 5 ATM | 10 days | Basic swim mode | No |
How we test
Each Fitbit was tested during pool sessions and open-water swims to assess tracking precision, comfort, and app accuracy. Devices were submerged for extended periods to confirm durability under real-world conditions.
We compared recorded lap counts, SWOLF scores, and heart-rate data against manual measurements to verify consistency. Battery life tests included both swim workouts and daily wear tracking to reflect realistic usage.
Conclusion
The best waterproof Fitbit for swimming depends on your needs. The Sense 2 and Versa 4 stand out for feature depth and tracking precision, while the Charge 6 offers the best balance between size and performance. For budget-conscious swimmers, the Inspire 3 remains unbeatable for its price and simplicity.
All these Fitbits withstand pool conditions and track laps accurately, helping you improve technique and endurance. Choose one based on your training intensity, data needs, and comfort preference, and enjoy every lap with confidence.
