1.How long does the heat last before it auto shuts off?
2.Is the heat pad washable?
Yes, it is washable. The plug is removable.
3.How does control work? push button? how do you know which level it’s on? Is there a lit visual display for Each level? Digital?
Yes 6 settings low, medium, high. Also is push button, levels turn color., so you know which is which. Easy to use, I like mine. Fir the money made very well.
4.Is this good for lower back lumbar issue?
Yes - great for back pain
30th Sep. 2019