Precor CLM 835 Commercial Series Stair Climber with P30 Console Commercial-grade stair climber uses the same smooth, self-powered generator system as Precor elliptical Built-in touch sensor for heart rate monitoring and Polar compatible 5 KHz wireless chest strap transmitter monitoring Step height 4-13 inches; 14 workouts with 31 resistance levels Measures 47"L x 32"W x 69"H; weighs 250 pounds Lifetime warranty on frame and welds, 10-years on parts and wear items