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When choosing a fitness tracker, one of the key features to consider is how well the device performs in low-light conditions. Accurate heart rate monitoring and reliable sleep tracking depend heavily on the device’s ability to function effectively in dim environments. In this article, we compare the Withings Steel HR and Garmin Vivosmart 5 to see how they perform in low-light scenarios.
Design and Display
The Withings Steel HR features a classic watch design with a small, circular display that is illuminated when needed. Its minimalist aesthetic makes it suitable for both casual and formal settings. The Garmin Vivosmart 5, on the other hand, has a slim, rectangular OLED display that is always on and easily visible even in low-light conditions.
Heart Rate Monitoring in Low Light
Both devices use optical sensors to measure heart rate, but their performance varies in low-light environments. The Withings Steel HR relies on ambient light and sensor contact, which can sometimes lead to less accurate readings when lighting is poor or when the user is stationary in darkness. Conversely, the Garmin Vivosmart 5’s continuous optical heart rate sensor is designed to maintain accuracy even in dim conditions, thanks to its advanced sensor technology.
Performance Tests
- Withings Steel HR: Slight fluctuations in heart rate readings during low-light sleep tracking, with occasional inaccuracies during periods of inactivity in darkness.
- Garmin Vivosmart 5: Consistently accurate heart rate monitoring in low-light conditions, with minimal deviations from actual heart rate during various activities.
Sleep Tracking and Low-Light Conditions
Sleep tracking is another critical function affected by lighting. The Withings Steel HR uses a combination of movement and heart rate data, but its accuracy can diminish when ambient light is insufficient, especially if the device relies on light-based sensors. The Garmin Vivosmart 5’s sensors are optimized for low-light sleep tracking, providing detailed insights without the need for external light sources.
Sleep Data Accuracy
- Withings Steel HR: Good sleep tracking in well-lit environments but shows some discrepancies in dark settings, particularly with REM detection.
- Garmin Vivosmart 5: Reliable sleep stage detection and heart rate data in low-light conditions, offering more precise sleep analysis.
Battery Life and Low-Light Usage
Battery performance can also influence low-light usage, especially if the device’s display or sensors need to be active longer. The Withings Steel HR has a long battery life, often lasting up to 25 days, which reduces the need for frequent charging in low-light conditions. The Garmin Vivosmart 5, with its always-on display, consumes more power but still maintains a respectable battery life of around 7 days, making it suitable for continuous low-light monitoring.
Conclusion
In low-light environments, the Garmin Vivosmart 5 generally outperforms the Withings Steel HR in terms of heart rate accuracy and sleep tracking reliability. Its advanced sensors and always-on display make it a better choice for users who need consistent performance in dim conditions. However, the Withings Steel HR’s classic design and impressive battery life remain attractive features, especially for those who prefer a traditional watch look.
Final Verdict
For optimal performance in low-light conditions, the Garmin Vivosmart 5 is recommended. Its superior sensor technology and consistent data accuracy make it a valuable device for fitness enthusiasts and health-conscious users who often find themselves in dim environments. The Withings Steel HR, while stylish and long-lasting, may require additional light for the most accurate readings.