A young man wearing a hoodie, pants, and athletic shoes is sitting on a red lounge chair and watching hi-def tv.
Man sitting in a red chair flipping through tv channels.
If a man is flipping through TV channels he can also be flipping through the channels on a hi-def TV.
Lounge chair is a specific type of chair.  "Flipping through tv channels" is a restatement of "watching hi-def tv.
A lounge chair is a type of chair.  A man flipping through channels is watching is tvs.