iPad Pro、iPad Air、iPad、iPad miniの各モデルの解像度、サイズ、重量、パフォーマンス、バッテリー駆動時間、容量などを比較できます。

https://www.apple.com/jp/ipad/compare/

SVHCs above the disclosure threshold: *Application exempted from EU RoHS requirement The SVHCs used in these products do not pose a safety risk to customers...

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

Specification—069-0135-K | September 2018 1. Scope It’s Apple’s mission to make sure that anyone who assembles, uses, or recycles 
 an Apple product can do ...

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