Signature Fitness SF-S2 Sprint Demon Demonstration: Adjustable Levels of Resistance
Here is another motorless curved treadmill that can take your cardio and endurance to the next level. The Signature Fitness SF-S2 Sprint Demon is designed for circuit training, sprints, power walking, and HIIIT. It has 7 levels of resistance for you to choose from and multiple hand grips.
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The SF-S2 Sprint Demon Treadmill features flexible slats. It is designed to go easier on your joints. It has a digital display to show calories, heart rate, and speed. It also has a device holder for your phone and tablet.
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