Here is another compact exercise machine that gives you a good workout when you are sitting. It has 10-degree incline and 11lbs max weight capacity. The FITNATION by Echelon Treadwell has 10 speed settings from 0.5mph to 1.8mph. It comes with a convenient remote with timer up to 30 minutes.
This tiny treadmill has a compact design, so you can easily take it with you anywhere.