noun
e-reader; e-book reader
Refers to a dedicated electronic device for reading digital books, as opposed to a general-purpose tablet or smartphone.
新しい電子書籍リーダーを買ったので、通勤中に本を読むのが楽しみだ。
I bought a new e-reader, so I'm looking forward to reading books during my commute.
電子書籍リーダーは目に優しい画面で、長時間の読書に向いている。
E-readers have eye-friendly screens and are suitable for long reading sessions.