しょう電力 でんりょく機能 きのうじゃなかったです
shō denryoku kinōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 省電力機能

1. Wasn't a power-saving function.; Didn't have a power-saving function.

Past/Perfective
Negative
Polite
Casual Register
Computing