Just like with Jacobs Ladder, YOU control the speed. The higher up you go, the faster the stairs come. It has an initial step height of only 10” and it will fit where other stair climbers won’t with a ceiling height requirement of only 8 ½ feet. Stairway is the only commercial stair climber that does not need a plug, so you can put it anywhere in a gym without being tied to a wall. It is also easy to move around so, it can be used in a personal training environment. It is the stair climber for all ages!