What is Ear (2) made of? March 22, 2023 15:54 Updated Both the charging case and earbud are made of a high-quality polycarbonate (PC) material. Related articles What is Ear (a) made of? How does audio output work for Ear (2) when Dual Connection is enabled? I have lost one of my earbuds. Does Ear (open) cause allergic reactions, redness, swelling or itching when worn? What is Nothing Ear made of?