How reliable is the sleep tracking feature on the Garmin Venu 3

- Some users report that the sleep tracking is inaccurate, with the watch frequently registering awake periods when the user was actually asleep[1][2]. One user found the sleep tracking on their Fitbit to be much more accurate compared to the Venu 3[1].

- Other users say the sleep tracking is pretty accurate most of the time on their Venu 3[1][3]. One person mentioned the sleep tracking is excellent compared to their previous Vivoactive 4[1].

- The Venu 3 does not currently use skin temperature data for sleep tracking, which may be contributing to the inaccuracies some users are experiencing. Rumor has it skin temperature tracking is coming to the Venu 3 in the future and will be used to improve sleep tracking[1].

- CNET's review states the Venu 3's sleep tracking is comprehensive, providing details on sleep stages, overnight heart rate variability, restless moments, and a sleep score with insights[4]. However, they did not validate the accuracy of the sleep stage detection.

- DC Rainmaker's in-depth review notes the Venu 3 accurately detected his sleep and wake times compared to other devices, but he did not validate the accuracy of the sleep stage detection either[5].

In summary, while the Venu 3 provides detailed sleep tracking metrics, the accuracy seems to vary between users. More advanced sensors like skin temperature tracking may help improve the reliability in the future. If sleep tracking is your top priority, a Fitbit may be a better choice currently according to some user experiences[1][2].