Using AirPods Pro 2 with iPhone and iPad to Help Protect, Assess, and Assist Hearing White Paper Using AirPods Pro 2 with iPhone and iPad to Help Protect, A...

https://www.apple.com/jp/health/pdf/Hearing_Health_Features_on_AirPods_Pro_2_October_2024.pdf

Pro Display XDR Technology Overview February 2020 
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https://www.apple.com/jp/pro-display-xdr/pdf/Pro_Display_White_Paper_Feb_2020.pdf

The design and validation of the algorithm is described in the next section and in Table 1. The output labels of Awake and REM refer to the corresponding cl...

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