Our medical treadmills have been the gold standard for more than 30 years. You can depend on our tough TM55 and TM65 treadmills to meet your cardiac stress testing needs. Features Integration with Quinton Q-Stress cardiac stress testing system Rapid-deceleration option for situations such as peak stress echo imaging A digitally-controlled AC-drive system A national direct service network and annual maintenance program Warranty: 13-Month parts and labor