or vice versa (REF_HTF) to control for the variable of listening fatigue or practice effects after。

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

Restricted Substance Specification Rev N_Final Draft_Japanese Apple規制物質仕様 069-0135-N 改訂版 ECO # 承認担当者 ⽇付 更新の内容 N 0063623060 JB 2025 年 3 ⽉ 14 ⽇ 詳細な改訂履歴についてはセク...

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