electroencephalography (EEG), electrocardiogram (ECG), pulse oximetry, airflow, and leg movements. Sleep stages are assigned by human experts based on visua...

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

platings. Restrictions apply to each individual homogeneous material. • Printed circuit board laminated materials consist of glass cloth, resins, and copper...

https://www.apple.com/jp/environment/pdf/Apple_Regulated_Substances_Specification_Sept2018.pdf

structural frame 100% recycled cobalt in the battery 100% recycled gold plating and tin solder in all Apple-designed printed circuit boards 100% recycled go...

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