Pro form endurance 920 e elliptical the pro form endurance 920 e elliptical is more advanced than its predecessors the 420 e and 720 e the endurance 920 e elliptical trainer offers dual grip ekg heart rate monitor with included ifit bluetooth smart chest strap ifit compatibility digital silent magnetic resistance from 1 24 and a 12kg effective inertia enhanced flywheel ifit subscription not included adjusts to fit mom dad and the kids 20 power adjustable stride achieve a customized