5mm plug directly into the TVs audio out jack. I cannot hear my kids laptop day in and day out! A couple parts look 3d printed but they fit together well and solid, I kinda like that because it might be and easy 3d print fix if I ever accidentally slam or step on them down the road. I am very impressed with the quality of the light for the price. Looks better, and the mechanism for holding handles is more straightforward and effective. I bought this for my six-year-old granddaughter. Ear-Nose-Throat and Ophthalmology (Urdhvanga Chikitsa or Salakya Chikitsa)--deals with ear, nose, throat, and eyes. I?ve tried scrubbing with soap, armour-all. The extra battery life and build quality alone is worth the price of admission, though having the sturdy kickstand, LED Battery life indicator, and pseudo-controller utility is great as well. The G Pro gives me all this performance.