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The Apple Watch is a wearable smart watch introduced by Apple in 2015 which includes a number of sensors useful for doing personal science. Since the first release, Apple Watches include a heart rate sensor and accelerometers/gyroscopes for [[activity tracking]]. Since 2020, some Apple Watch models also do rudimentary [[sleep tracking]], though the capabilities are still somewhat behind other wearables. Since the 4th generation, Apple Watches also include an [[ECG]] sensor that can be used to take manual readings and since the 6th generation they it includes a [[Oxygen saturation|Blood oxygen]] sensor. Beyond this, the Apple Watch also uses its microphone to regularly record environmental noise levels.  

The '''Apple Watch''' is a wearable smart watch introduced by Apple in 2015 which includes a number of sensors that can be used for personal science.

 

Since the first release, Apple Watches include a heart rate sensor and accelerometers/gyroscopes for [[activity tracking]]. Since 2020, some Apple Watch models can also do rudimentary [[sleep tracking]].

 

Since the 4th generation, Apple Watches also include an [[ECG]] sensor that can be used to take manual readings and since the 6th generation they it includes a [[Oxygen saturation|Blood oxygen]] sensor, though this has been disabled in recent models sold in the USA due to patent issues<ref>https://www.theverge.com/2024/1/17/24041945/apple-watch-series-9-ultra-2-blood-oxygen-ban</ref>.

 

Beyond this, the Apple Watch also uses its microphone to regularly record environmental noise levels.  

==Data storage and export==

==Data storage and export==

* [[User:Gedankenstuecke|Bastian Greshake Tzovaras]] used the environmental noise data to explore [https://forums.openhumans.org/t/headphone-vs-environmental-noise-levels/241 how the sound of his surroundings shape how loud he plays music on his headphones].

* [[User:Gedankenstuecke|Bastian Greshake Tzovaras]] used the environmental noise data to explore [https://forums.openhumans.org/t/headphone-vs-environmental-noise-levels/241 how the sound of his surroundings shape how loud he plays music on his headphones].

** He also used environmental noise data together with location data from [[Overland]] to [https://exploratory.openhumans.org/notebook/77/ explore how sound levels change throughout the city].

** He also used environmental noise data together with location data from [[Overland]] to [https://exploratory.openhumans.org/notebook/77/ explore how sound levels change throughout the city].

==Sensors in different Apple Watch series==

==Sensors in different Apple Watch series==