Our NEW SM-M VersaClimber incorporates magnetic resistance for the hyper-smooth movement. SM-M uses eddy current brake system that creates non-friction resistance. The SM-M accommodates every exerciser with 11 easily adjustable resistance levels. As the leader in total-body vertical climbing since 1981, VersaClimber delivers highly efficient, effective, total-body, non-impact workouts that blast calories and fat.