Adapter input:100-240vac output:12-24VDC
Yes, accommodates wide feet.
Even with small feet, you can rotate & move your feet around during a massage, & still get the benefits.
You can put it on the car seat, there is a control for it
It comes in a box, no assembly required.
It’s a pretty quiet unit.You can use it in the bed room when your family are sleeping.
You can buy the adapters at a lot of place.It’s standard model.