CycleOps PowerBeam Pro Trainer ANT+, Electronic resistance unit allows for programmable workouts, Noise level at 20 mph is a quiet 69-70 decibels, CycleOps Pro series frame features a fold-flat design Single-leg leveling adjustment allows for easy adjustment on uneven surfaces Made in Madison, WI, USA Lifetime warranty Resistance: programmable, progressive Material: [frame] aluminum Recommended Use: indoor cycle training Manufacturer Warranty: lifetime