A Japanese bento, a rectangular compartmentalized lunch box divided into sections containing white rice, vegetables, and meat, seafood, or prepared items such as sushi and fried shrimp. Occasionally also includes ginger.

Several platforms depict their rice topped with a red garnish resembling an umeboshi, or pickled plum. Facebook's design includes a pair of chopsticks alongside the box.

This emoji predates the inclusion and standardization of emojis within Unicode. It was first added to early Japanese emoji keyboards by SoftBank in 2000.

Bento Box was approved as part of Unicode 6.0 in 2010 and added to Emoji 1.0 in 2015.