Additional Features * Integrated Muscle display * Speeds range from 1 to 12 MPH * Compact folding design with safe drop technology * Large blue black lit display * Easy-to-use speed and incline keys * 15 built-In programs with more available for * Features i.Concept display compatible with iPad, iPhone, iPod, and iTouch * Active Flex suspension technology for great shock absorption * Large 20 x 57 inch running surface * Quiet 3.5 HP DC motor provide the power and torque needed * Polar wireless HR compatible * Dimensions: 72.9L x 31.5W x 52.2H inches