A:AnswerThe include a usb-c cable in the box but you will need your own charging adapter ("block") in order to charge them.
They are considered over-ear headphones, so if you have average sized ears they will fit around the ear and not on the ear.
A:AnswerThese would not make for good recording or studio use. They have a "lively" v-shape tuning curve, with more muddy bass response and bright highs. You want natural (flat) tone headphones to use for recording. I would look for something from Audio-Technica or even AKG. Those will be better options for what you're looking to do.
A:AnswerNone particular. Anything that fits the micro usbc. I have plugged mine to my Samsung phone charger, pluged into a battery pack, my car accepts usbc and works great. Also plugged in my dell desktop to charge. No isseues. Charges fast too no matter where i plug it in.