ProForm 500 RT Treadmill: * ProResponse cushioning * 1-10 mph QuickSpeed control * 1-10 percent Quick Incline control * iFit workout card technology * 2.25 CHP Mach Z commercial plus motor * 15 built-in workouts * Compatible music port for iPod * Grafixx display * CoolAire workout fan * 20" x 55" treadbelt * Dual-grip EKG heart rate monitor * 300 lb weight capacity * Lifetime frame warranty * 25-year motor warranty * 1-year parts and labor warranty * Model# PFTL75910