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Cardio Trainer Manual Treadmill

✓ National Sunny Health & Fitness Dealer

✓ Ships in 3 - 5 Business Days

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In Stock - leaves the warehouse in 3 - 7 business days.

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Email us at hello@competitorsoutlet.com or chat or text to (646) 657-8856



Challenge your cardio routine with the SF-T7878 Magnetic Training Treadmill by Sunny Health & Fitness. With a weight capacity of 300lbs, feel confident when you dash on the running surface (47.5L x 17.5W in). Take advantage of the two, 11-pound flywheels that maintain running belt momentum and adds additional resistance to your exercise. Quickly control workout intensity by using the manual incline adjustor tool, which allows you to switch between three fixed levels of incline. Grab the slip-resistant multi-grip handrails, which you can use as support during dynamic cardio exercises, including high-intensity interval training. Use this cardio machine to practice controlled movements like sled-like training exercises that target muscles in your shoulders and improve your speed. Want even more resistance? Cycle through 16 levels of adjustable magnetic resistance that makes it progressively harder to maintain your running speed.


Digital Monitor With Device Holder:

Superior digital technology assists in tracking your speed, time, distance, calories/incline, steps and body fat percentage. Quick Buttons allow you to quickly adjust incline to levels 3, 6, 12 or quick speed buttons for 2, 4, 6 MPH.


16-Adjustable Resistance Levels:

Switch up the intensity of your workout with the 16 levels of magnetic resistance. With a simple twist, you can increase or decrease resistance so your workout can remain challenging and effective throughout your fitness journey. Perfect for any user's skill level!


Dual 11 Lb Weighted Flywheels:

Creates stable and smooth response for user. Weight of flywheels requires a higher energy demand from the user to get the belt started. Increases speed, power output and tensions.


3 Levels Of Manual Incline:

Personalize the level of intensity of your workout with 3 different manual incline positions. Walk, Jog, or Run with adjustable inclines to maximize your calories burned. Taking advantage of the incline features on your treadmill is a great way to maximize your workout’s intensity without increasing the time or speed of the workout which could put additional stress on your joints.




Spacious Tread Deck:

With a 47.5L x 17.5W in running surface, this fitness machine requires zero electricity and is completely self-powered. The adjustable resistance and fixed incline allow you to enjoy a versatile and muscular power-based cardio workout


Shock Absorption:

Reduce joint impact in every step with the shock absorption technology that is embedded on the low deck treadmill.


Pulse Sensors:

Monitor and maintain your target heart rate. Measuring your pulse rate is an important tool for exercising correctly and efficiently. The more steady and prolonged the elevated heart rate is during the workout, the more fat is burned. This important piece of health data will help you better understand your health and fitness status.


Soft Drop System:

The soft-drop hydraulic mechanism on the Sunny treadmills is a great feature that allows the deck to gently lower itself to the floor. The soft drop hydraulic mechanism assures safe, hands free unfolding. No longer will you fear scuffing your floors when dropping your treadmills base. Fold your treadmill for storage and unfold your treadmill when it’s time to work out.


Foldable Design:

Fold the treadmill deck upward to save space when the machine is not in use. The soft-drop technology makes it simple to lower the deck to the ground without damaging home surfaces.


Transportation Wheels:

Built-in transportation wheels for easy portability. Simply tilt and roll out for use or away for storage, no need for heavy lifting or muscle strain.




  • Monitor: scan, speed, distance, time, calorie, odometer, pulse
  • 3 Adjustable incline levels
  • 16 Adjustable resistance levels
  • Pulse sensors
  • Device holder
  • Foldable


  • Multi-grip handlebars
  • Soft-drop system
  • 47.5L x 17.5W in the running deck
  • Transportation wheels


  • 300 lb Weight capacity
  • Adjustable magnetic resistance
  • (2) 11 lb Flywheels
  • Manual incline


  • Warranty: 3-year structural frame 180 days other parts and components
  • Product weight: 102.2 lb
  • Product dimensions: 56L x 26.5W x 55.5H in
  • Folded dimensions: 28L x 26.5W x 55.5H in
  • Ship weight: 126.8 lb
  • Ship dimensions: 29.6L x 28.7W x 56.6H in

Frequently Asked Questions

Does this treadmill require electricity?

No, the treadmill does not need to be plugged in and the treadmill belt is powered by the speed of the user.

What is the benefit of using a manual treadmill?

Manual treadmills are great for high-intensity workouts as the force you apply to the tread deck will increase the momentum of the flywheels. You can walk, jog, or run for a variety of cardio workouts.

How does the magnetic resistance work for my treadmill exercise?

The magnetic resistance applies resistance progressively to the two flywheels making it more challenging to get the treadmill up to speed and burn more calories while conditioning your lower body further. There are 8 magnetic resistance levels available on this treadmill.

Does the treadmill provide feedback during my workout?

The digital monitor helps track time, speed, distance, calories, and hand pulse. With its convenient scan mode, you can choose to see all numbers continuously repeated throughout your workout.

What is the maximum weight the treadmill will support?

Feel confident on our durable design with a 300LB max user weight limit.

Can I fold the treadmill for storage?

Yes! The treadmill can be easily and safely folded and unfolded with the soft drop hydraulic mechanism, and moving the treadmill to storage from your workout space is made easy with the transportation wheels.

How do you adjust the incline on this treadmill?

This treadmill has 3 incline levels that can be adjusted manually.

What is the warranty of my treadmill?

There is a 3-year warranty on the structural frame and a 180-day warranty on other parts and components.


Owner’s Manual



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