### Apple Watch Sleep Score Feature: Compatibility and Functionality
If you tuned into Apple’s “Awe Dropping” event, you may have thought that the newly introduced Sleep Score feature would be limited to the upcoming Apple Watch Series 11 and Ultra 3. Thankfully, that’s not the situation. Here’s the complete compatibility list.
#### How Sleep Score Functions
The Sleep Score feature assesses your sleep based on multiple factors, such as:
– Duration of sleep
– Consistency of bedtime
– Frequency and length of awakenings
– Time spent in each sleep phase (deep, core, and REM)
After the score is computed, Apple categorizes the outcomes and contrasts them with the user’s average data, facilitating the identification of areas needing enhancement.
As per Apple, this new watchOS 26 feature was created using more than 5 million nights of sleep data derived from the Apple Heart and Movement Study. It was also guided by insights from the American Academy of Sleep Medicine, the National Sleep Foundation, and the World Sleep Society.
#### Sleep Score Accessibility
If you assumed the new feature was reserved for the most recent Apple Watch models, you’re in good company. Nonetheless, Apple has confirmed that:
> “Sleep score is available with watchOS 26 for Apple Watch Series 6 or later, Apple Watch SE (2nd generation) or later, and all Apple Watch Ultra models, paired with iPhone 11 or later, running iOS 26.”
This indicates that every Apple Watch compatible with watchOS 26 will have access to the feature. However, users of older devices might need to modify their charging routines to ensure their watches maintain sufficient battery life for both daytime and nighttime usage.
For additional information, make sure to review the complete coverage of the “Awe Dropping” event.
