NTT DoCoMo's Card Keitai is the company's lightest phone ever at only 47 grams, and it features a single 600x480 E Ink display. It's a feature phone (cannot add applications) that supports simple functions.

NTT DoCoMo Card Keitai photo

The Card Keitai will ship in Japan by the end of November 2018 for around $280.

E Ink display info: 
600x480 E Ink display
Tags: