to an algorithm that classifies the signal every 30 seconds (epochs) into one of four stages: Awake, REM sleep, Deep sleep, or Core sleep. This classificati...

https://www.apple.com/jp/healthcare/docs/site/Estimating_Sleep_Stages_from_Apple_Watch_Sept_2023.pdf

2020 Program Update 3 Supplier Projects We help our suppliers select projects with the greatest potential for impact and with a clear carbon, ecological, an...

https://www.apple.com/jp/environment/pdf/Apple_Supplier_Clean_Energy_Program_Update_2020.pdf