The life span tr5000 dt5 treadmill desk has been built to allow you to walk for long periods of times while you work the treadmill height adjustments are manual and will be able to change settings whenever you want the wide range of height adjustments helps to fit multiple people and their different sizes unlike some of the other treadmill desks this machine has a thicker belt to improve the comfort of this machine and this will require less lubricant and maintenance this machine has also be