見てるの

are you watching?

→ 見る
phrase Very common #1,196
are you watching? 見てる is a casual contraction of 見ている. の adds a conversational, often questioning tone.
JA: 今、何見てるの?
EN: What are you watching right now?

テレビ見てるの?

Are you watching TV?

テレビは見てるの?

Are you watching TV?

— ラブ・アクチュアリー (2003)

何の番組見てるの?

What show are you watching?

何でこっちを見てるの?

Why are you looking at me?

何の映画を見てるの?

What movie are you watching?

何見てるの

What are you looking at?

— 暗殺の森 (1971)

何見てるの?

What are you looking at?

あんたたち何見てるのよ

What are you guys looking at?

— Carandiru (2003)

メアリーって、テレビ見てるの?

Is Mary watching TV?

テレビはどこで見てるの?

Where do you watch TV?

誰かが私をじっと見てるの。

Someone is staring at me.

なんでいつも双眼鏡見てるの?

Why are you always looking through binoculars?

— ムーンライズ・キングダム (2012)

私を見てるの?

Are you looking at me?

なぜ皆あの人を見てるの?

Why is everyone looking at that person?

— マレーナ (2000)

何で私のこと見てるの?

Why are you looking at me?

何見てるの?

What are you looking at?

— 暗殺の森 (1971)