, because the N2 stage is predominant (often making up more than 50 percent of a night’s sleep), normal, and an important aspect of sleep physiology, contai...

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

in prolonged skin contact to help minimize risk to customers under normal use conditions • NGO partnerships to advance safer alternatives, including the ide...

https://www.apple.com/jp/environment/pdf/products/iphone/iPhone_Air_PER_Sept2025.pdf