The Schwinn Airdyne Exercise Bike is simply smart - wind resistance is exponential, so the harder you pedal, the higher the resistance becomes. This naturally provides the right workout for both a novice exerciser and an elite athlete. Specifications: Resistance Levels - Infinite Resistance System - Air Drive System - Chain Drive # of Workout Programs - 2 Workouts - Simultaneous upper/lower body, or upper body workout only Display Type - LCD Display Readouts - Time, Distance, Calories, Calories per Hour, RPM, Workload, and Optional Heart Rate Style - Upright Stationary Bike Dimensions - 50"L x 22.5"W x 48"H Weight - 96 lbs Max User Weight - 300 lbs Power Requirements - 2 AA Batteries Seat - Extra padded, anatomically correct seat Residential Warranty - Frame - 30 Years; Parts - 3 Years; Electronics - 3 Years; Labor - 1 Year; Wear Items - 1 Year