The Star Step 3100 is a self generating stepper built for heavy use in clubs. The 3100 has 20 different effort levels which are activated by user energy input. The Star Step has a dot matrix display and informative readouts. It also has a built in water bottle holder. What makes Star Step popular is that it is very easy to use and no power is needed. Just step on and climb. Dimensions: 59.75"H x 38"L x 30"W Weight: 142lbs. In Home Warranty: Lifetime (toll free) phone support Lifetime frame 1 year parts on all motors 180 days parts on entire machine 90 days wearable replacement / repair on pads, grips, belts and cables due to manufactures defects 30 days labor reimbursement