How accurate is the sleep score provided by the Garmin Lily 2

Sleep Tracking Features

Comprehensive Sleep Metrics
The Garmin Lily 2 tracks various aspects of sleep, including total duration, the time spent in different sleep stages (light, deep, REM), and overall sleep quality. It also monitors additional health metrics such as resting heart rate, stress levels, blood oxygen saturation (SpO2), and respiration rate during sleep[1][2].

Sleep Score
A notable addition is the sleep score feature, which evaluates your sleep based on factors like duration and restlessness. This score provides a quick assessment of your sleep quality and is accompanied by insights on improving your sleep habits[1][2]. The companion Garmin Connect app presents a detailed breakdown of your sleep metrics the following morning, helping users understand their sleep patterns better.

On-Watch Data Access
Unlike the original Lily model, the Lily 2 allows users to view their sleep data directly on the watch. This includes accessing the sleep widget that displays last night's sleep duration and score, making it more user-friendly for immediate insights[1][3].

Performance and Accuracy

General Accuracy
While many users report that the Lily 2 accurately tracks sleep times and phases, some discrepancies can occur. For instance, there may be instances where the device misclassifies sleep onset or wake times due to various factors like movement during the night[3]. However, overall feedback indicates that it aligns well with other devices in terms of tracking accuracy.

Comparison with Other Devices
In comparative tests against devices like the Oura Ring and Fitbit Charge 5, the Lily 2 showed a high level of agreement in sleep metrics. This suggests that its algorithms for determining sleep stages are reliable[1]. Users have noted that while it provides valuable insights into sleep quality, the specific breakdowns of different phases may not be as critical for everyone.

Limitations

Lack of Advanced Features
Despite its strengths, some users feel that certain features could be improved. For example, there is no built-in GPS for tracking outdoor activities independently; users must connect to their smartphones for GPS functionality[4]. Additionally, while the display is stylish, it may not be bright enough for all lighting conditions, which can affect usability when checking notifications or data outdoors[5].

Conclusion

Overall, the Garmin Lily 2 excels in providing detailed sleep tracking features that cater to casual fitness enthusiasts looking for a stylish yet functional smartwatch. Its ability to deliver comprehensive metrics without requiring a subscription sets it apart from some competitors. While there are minor accuracy issues and limitations regarding advanced features like GPS, its enhancements over previous models make it a solid choice for those prioritizing both aesthetics and health tracking capabilities.

Citations:
[1] https://www.pcmag.com/reviews/garmin-lily-2
[2] https://www.cnet.com/tech/mobile/garmins-new-lily-2-smartwatch-can-rate-your-sleep-and-track-your-dance-moves/
[3] https://www.dcrainmaker.com/2024/01/garmin-lily-depth-review.html
[4] https://thedisconnekt.com/garmin-lily-2-review/
[5] https://www.theverge.com/24152258/garmin-lily-2-fitness-tracker-wearable-smartwatch
[6] https://www8.garmin.com/manuals/webhelp/GUID-FABAD210-C716-48B1-AB1D-A09097F1CED4/EN-US/GUID-70D41BFB-2BB2-4933-BF95-47FF63140112.html
[7] https://support.garmin.com/en-IN/?faq=4OWGODsdXr2m1Xk5fPiHf8
[8] https://support.garmin.com/en-CA/?faq=mBRMf4ks7XAQ03qtsbI8J6&productID=950157

How accurate is the sleep score provided by the Garmin Lily 2

The accuracy of the sleep score provided by the Garmin Lily 2 has garnered mixed feedback from users and reviewers. Here’s a detailed look at its performance:

Sleep Score Evaluation

Methodology
The Garmin Lily 2 calculates sleep scores based on several factors, including total sleep duration, restlessness, and the amount of time spent in various sleep stages (light, deep, and REM sleep) [1][3]. This scoring system is designed to give users a quick assessment of their sleep quality.

User Experiences
Many users report that the initial sleep scores provided by the Lily 2 are generally accurate. For instance, one review noted that after a night of sleep, the watch provided a score that reflected the user's feelings about their rest accurately [1]. However, some users have experienced discrepancies where the watch later adjusts recorded sleep times and scores inaccurately, leading to confusion about their actual sleep quality [4].

Comparative Accuracy
When compared with other devices like the Oura Ring and Fitbit Charge 5, the Garmin Lily 2 showed a high level of agreement in sleep metrics. This suggests that its algorithms for determining sleep stages are reasonably reliable [1][2]. Reviewers have noted that while no consumer device is perfect in measuring sleep stages, the Lily 2's scoring aligns well with subjective user experiences regarding how rested they feel upon waking.

Limitations

Inconsistencies in Data
Despite its strengths, some users have pointed out issues with the watch incorrectly changing recorded sleep times after initial assessments. This can lead to significant variations in sleep scores, sometimes dropping from a high score to a much lower one after adjustments [4]. Such inconsistencies can undermine trust in the accuracy of the data.

General Accuracy Concerns
While many find the overall duration of sleep tracked to be accurate, there are instances where specific phases of sleep may not be as precisely recorded as desired. This is a common issue across many wearable devices that track sleep stages [2].

Conclusion

Overall, while the Garmin Lily 2 provides a useful and generally accurate sleep score based on a combination of metrics, users should be aware of potential discrepancies in recorded data. The device performs well compared to competitors but may require manual adjustments or verification from users to ensure accuracy in their personal tracking experiences.

Citations:
[1] https://www.pcmag.com/reviews/garmin-lily-2
[2] https://www.dcrainmaker.com/2024/01/garmin-lily-depth-review.html
[3] https://www.cnet.com/tech/mobile/garmins-new-lily-2-smartwatch-can-rate-your-sleep-and-track-your-dance-moves/
[4] https://forums.garmin.com/sports-fitness/healthandwellness/f/lily-2-series/372229/lily-2-series-incorrectly-changing-sleep-times
[5] https://www.dcrainmaker.com/2024/10/garmin-lily-2-active-with-gps-review.html
[6] https://www8.garmin.com/manuals/webhelp/GUID-FABAD210-C716-48B1-AB1D-A09097F1CED4/EN-US/GUID-70D41BFB-2BB2-4933-BF95-47FF63140112.html
[7] https://mashable.com/review/garmin-lily-2
[8] https://www.reddit.com/r/Garmin/comments/1bzbv03/garmin_lily_2_sleep_and_swim_tracking/

Can the Garmin Lily 2 track sleep stages without a subscription

The Garmin Lily 2 can indeed track sleep stages without requiring a subscription. This smartwatch provides users with comprehensive sleep tracking features, including the ability to monitor various sleep stages—such as light, deep, and REM sleep—as well as overall sleep duration and quality metrics like the sleep score.

Key Features of Sleep Tracking

- Sleep Score: The Lily 2 calculates a sleep score based on multiple factors, including total sleep time and restlessness, which helps users quickly assess their sleep quality.
- Detailed Metrics: Users can view detailed statistics about their sleep directly on the watch, including the breakdown of different sleep stages and other health metrics like heart rate and blood oxygen levels (SpO2) during the night.
- Garmin Connect App: For more in-depth analysis, users can sync their data to the Garmin Connect app, where they can access detailed insights and historical data regarding their sleep patterns.

No Subscription Required

Unlike some competing devices that limit access to detailed health metrics without a subscription (e.g., Fitbit Premium or Oura Ring), the Garmin Lily 2 allows users to access all tracked data and health insights without any additional fees. This includes full visibility of sleep stages and scores, making it an appealing option for those who want comprehensive tracking without ongoing costs[1][2][3].

Conclusion

In summary, the Garmin Lily 2 provides effective sleep tracking capabilities, including stage monitoring and scoring, all without the need for a subscription. This feature set positions it favorably among other smartwatches in its category, especially for users looking for a stylish yet functional device.