Kettler Home Exercise/Fitness Equipment: UNIX M Elliptical Trainer Easy-to-use elliptical cross trainer provides exceptionally smooth performance with 40 pound drive system; ultra-low impact and natural motion High resolution LCD computer displays Speed, RPM, Distance, Time, Energy Consumption and Pulse Rate; can tilt computer to eliminate glare Sturdy, powder coated, carbon steel frame; Frictionless, motorized magnetic brake system; Poly "V" drive belt permits silent operation Can measure heart rate using telemetric hand grips or exclusive KETTLER wired infrared pulse sensor Operates on 2 AA batteries; Lifetime frame warranty; three-year residential warranty for all other parts and one-year residential warranty for labor