I couldn’t get the speakers to work when plugged into my MacBook to try Netflix, so had to keep the sound output from my Mac speakers. Unsure about the headphone Jack because I didn’t try it out. Seems like I don’t know how to use it because plying video’s it would fast forward..? But working in excel, websites, etc was just fine. Portable Monitor 15.6inch 1080P USB C HDMI Travel Monitor for Laptop with Ultra-Slim IPS Display w/Smart Cover & Dual Speakers, Portable Screen for Laptop Pc Phone Mac Xbox Ps5 Switch