Because of smartphones, pocket TVs were never a thing.
As a kid I imagined the future as being able to hold a TV in your pocket, and flying skateboards. For the latter I guess electric scooters will have to do
Absolutely! (Same as playing a regular game on a Game Gear.)
I had both an AC adapter and a 12VDC car adapter for mine. Without those (considering the sorry state of rechargeables back then), the cost of batteries would've made actually using the damn thing untenable.