noun
1seg; mobile digital TV
Refers to the Japanese terrestrial digital broadcasting service designed for mobile devices such as phones and handheld TVs. Often used in compounds like ワンセグ放送 or ワンセグ対応.
この携帯電話はワンセグに対応している。
This mobile phone supports 1seg.
通勤中にワンセグでニュースを見る。
I watch the news on 1seg during my commute.