I tried several different tennis shoes for walking, and most hurt my feet. I am able to walk and wear these the entire day without pain.
The treadmill feels sturdy and seems adequately powered. Unfortunately, you cannot input your height/weight/age in order to obtain a more accurate count on calories burned. Also, don't dare pull the emergency stop cord, unless you want to erase your entire workout.
After assembly, I tested it and I heard a screw fall off. After investigation, I figured out where the screw is from the front left side of the upper and lower plastic cover of the running platform. Its surprising to me that original hole was already mashed up. I tried to put it back in but the screw holes will not line up. I did not try to force it due to fear of cracking the cover. so left it alone.