Here is another smart foldable treadmill that gives you a good workout indoors. The KingSmith WalkingPad X21 combines with the KS Fit app to show your time, speed, steps, and calories burned. The X21 can be folded twice, so you can easily fit it in the smallest rooms.
The X21 has a speed range of 0.5 to 12km/h. It has a discreet LED digital display to show your stats. It comes with NFC connectivity. This treadmill is 918W rated. It has max user capacity of 220lbs. You can find out more about it here.