Sunny ASUNA 7700 Treadmill – Heavy-Duty Manual Treadmill!

The Sunny ASUNA 7700 Treadmill from Sunny Health & Fitness is the best manual Treadmill for running and other more intense workouts. HIIT and Tabata enthusiasts love it. At 167 lbs., with transport wheels and a soft-drop system, this unit is portable and compact—with a fold-up length of 27.5 inches. Surprisingly, it has a very high user weight capacity of 440 lbs.

The ASUNA 7700 has two heavy-duty magnetic flywheels at the front that give a smooth ride with eight different resistance levels—you can control the resistance by little gear shift that is easy to reach, at the user’s right side. Also, the incline is adjustable in 1-degree gradients from 10 to 14 degrees.

Even as it has no console, it does have a rubber gripping surface to hold an iPad/tablet—many users might prefer this. Furthermore, the handrails— made of sweat resistant, grip-able material—are extensive to allow eight different holding positions.

With the ASUNA 7700, you can walk/run forward, backward, and sideways—you can even do a series of squats on it. You can do sled-push/drive movements. You can also do climbing exercises—with the hands-on floor, pushing with legs, or hands walking on the Treadmill, with feet on the floor.

Learn more in my complete review below

Sunny ASUNA 7700 Treadmill
Sunny ASUNA 7700 Treadmill

Product: Sunny ASUNA 7700 Treadmill

Price: For a great deal on this Treadmill, merely go here on Amazon

Warranty: Frame 5 years / Parts 180 days

My rating: 8.5/10

Amazon Affiliate Disclosure: I may earn commissions on purchases made through links in this post.

Details and Specifications

  • Assembled dimensions: 55L x 30W x 57H inches (140L x 76W x 145H cm)
  • Running surface dimensions: 49L x 19W inches (124L x 49W cm)
  • Deck cushioning: 6 cells
  • Assembled weight: 167 lbs (76 kg)
  • Weight capacity: 440 lbs (200 kg)
  • Incline: Manual, 10°-14°
  • Resistance: Magnetic, eight levels
  • Fitness console: No
  • Warranty: Frame 5 years / Parts 180 days

ASUNA 7700 Frame construction

The ASUNA 7700 treadmill is a Hi-Performance machine that features a heavy-duty frame made of steel tubing. Both its deck and the front section of the frame with the upright masts are very sturdy, and the whole machine has a maximum load capacity of 440 lbs (200 kg).

Sunny ASUNA 7700 Treadmill

The front masts of the machine are curved to improve sturdiness, but also provide an aesthetic touch to the machine. The handlebar assembly features a multi-grip design, offering the possibility to perform a wide variety of workouts, from light-cardio, walking, and recovery training to high-intensity HIIT workouts. The whole handlebar assembly comes coated with a rubber layer to provide a sweatproof, secure grip.

This Sunny Health & Fitness treadmill does not have a console. However, it does include a tablet holder that can support any type of tablet. You can also your own heart monitor device to it if you have one. The unit itself does not have any pulse reading function or Bluetooth, nor can it communicate with any fitness app.

The fully assembled unit is not extremely large compared to other treadmills. It only takes 55″L x 30″W (140 x 76 cm) of floor space. On top of that, its deck is foldable. You can fold it vertically and lock it in this position with the knob on the left mast.

The folding mechanism also integrates a hydraulic cylinder, which assists you when unfolding the deck, slowly lowering it until it touches the floor to prevent any damage. With the deck folded up, the unit’s length reduces to 27.5″ (70 cm).

Despite the fact that it is a rather small treadmill, the ASUNA 7700 is not exactly a light fitness machine. It weighs approx. 167 lbs (76 kg); therefore, it is recommended to be carried and assembled by two persons.

However, once fully assembled, its transport shouldn’t be too difficult because its front base frame features a set of transport wheels. Also, the front metallic base frame has adjustable stabilizers to perfectly level the unit on any type of floor.

All the steel parts in the machine’s frame construction come coated with a durable paint finish which is resistant to corrosion. The color used is black, this being the only color available for this model (at least for the moment).

Deck and running surface

As I’ve mentioned earlier, the Sunny ASUNA 7700 features a highly durable deck that can support users up to 440 lbs (200 kg). It integrates a solid running board, while the side rails as steel-made, with a sheet of non-slip material on top.

Sunny ASUNA 7700 Treadmill
Sunny ASUNA 7700 Treadmill

The tread belt is made of heavy-duty rubber material featuring a textured surface to provide high adherence during all exercises. It offers a running surface of 49″L x 19″W (124 x 49 cm) which should be enough for users up to 6’2″ (188 cm). Taller users may find it a bit small for their complete stride, but walking or light jogging workouts are still possible for them as well.

The diameter of the integrated rollers is not specified, but they are relatively thick for a small deck, providing excellent traction for the belt. They also integrate high-grade ball bearings for a smooth motion.

Just like most other treadmills, the ASUNA Hi-Performance 7700 features an integrated deck cushioning system. Its deck integrates six cushioning cells, placed in pairs of two at the rear, at the middle, and the front of the deck. Therefore, the unit delivers a lower impact on your ankles, knees, hips, and spine during running.

ASUNA 7700 Incline and step-up height

The Sunny ASUNA 7700 comes equipped with a manual incline system. It consists of two adjustable “feet” situated at the rear of the deck. Thus, to adjust the incline of the deck, you have to fold it first, change the two feet to the desired position, and then unfold it once more. Since the incline system is not automatic, you cannot adjust it during exercising.

The lowest incline of the deck is with the two rear feet extended to their maximum position. This way, the unit provides a slope of approx—10 °.

Conversely, with the feet adjusted to their minimum length, the rear of the deck will be lower, and therefore, the deck will provide an incline of approx 14°. Thus, the incline span is approx 4°. It’s also very important to mention that the deck does not offer a completely horizontal position.

When it comes to step-up height, the rear part of the deck is approx. 5″ (13 cm) above floor level when the incline is set at its lowest. Conversely, the highest point of the running surface is approx. 15″ (40 cm) above floor level. Therefore, to prevent any hindrance during exercising, it is recommended to assemble and use the unit in a room with a ceiling that is at least 20″ (51 cm) higher than your height.

Sunny ASUNA 7700 Treadmill

Resistance system

The Sunny ASUNA 7700 is a manual treadmill. It does not use a motor for moving the belt. Thus, the adjustment of the belt speed cannot be done automatically, and doesn’t have a delimited speed range; you can run as fast as you can on it.

The front roller of the machine integrates a dual flywheel system, which adds smoothness to the ride and reduces belt and deck vibration. The flywheel assembly on the right incorporates a manual magnetic resistance system that consists of a magnetic brake that is attached to the tension dial on the right mast through a steel cable.

If you press the dial down, the brake moves closer to the flywheel, which results in an increased magnetic pull on the wheel, which leads to an increase of the overall belt movement difficulty.

The unit’s tension dial features eight distinct levels of difficulty. According to several user reports, even the lowest tension delivers quite a bit of belt movement difficulty. Thus, the Treadmill promotes high-intensity training and great possibilities to develop your stamina and strength.

ASUNA 7700 Assembly and Maintenance

The ASUNA 7700 comes fully assembled and in the folded position. The only part that requires assembly is the tablet holder. Thus, the setup of the machine should not take more than 5-10 minutes. The manual provides all the necessary instructions.

For maintenance, the deck will require lubrication before the first use, and then periodically, depending on how often you use the machine. The manual provides the necessary instructions for this. Also, a tube of silicone lubricant is (included) with the unit. Other than this, it is advisable to inspect the unit from time to time and re-tighten any potential loose bolts or parts.


  • Heavy-duty frame and deck – can support users up to 440 lbs

    Sunny ASUNA 7700 Treadmill
    Sunny ASUNA 7700 Treadmill
  • Small footprint;
  • Folding design with a soft-drop hydraulic system;
  • Adjustable stabilizers on the front base;
  • Transport wheels included;
  • Multi-grip handlebars;
  • Tablet holder included;
  • Non-slip side rail covers;
  • Manual belt action offering the possibility to run as fast as you can;
  • Manual incline with a range between 10°-14°;
  • Six shock absorption elements integrated into the deck;
  • Dual flywheel system for a smooth and steady belt movement;
  • Manual magnetic resistance with eight distinct levels;
  • Quiet operation;
  • No power consumption;
  • Comes almost completely assembled;
  • Little maintenance required;
  • Excellent warranty.


  • The deck cannot be set in a horizontal position;
  • No fitness console;
  • The incline is not adjustable during the usage of the machine.

Sunny ASUNA 7700 Treadmill Summary

The Sunny ASUNA 7700 is a heavy-duty manual treadmill designed for high-intensity cardio and interval workouts. It features a dual flywheel system for a smooth belt motion, a magnetic resistance system for adjusting the belt movement difficulty, and a multi-grip handlebar with a tablet holder. It also has a manual incline system. And finally, it’s not exactly an affordable unit but does offer excellent quality for the price.

I hope you found this article helpful and informative. If you have anything that you’d like to share or any opinions about my website, please do speak up. I look forward to your comments, questions, and the sharing of ideas.

Recommended articles:

Is the Reebok Jet 300 Treadmill equipped for your needs?

6 thoughts on “Sunny ASUNA 7700 Treadmill – Heavy-Duty Manual Treadmill!”

  1. Thanks for the comprehensive review you have done here.  The video at the middle-end of this post is always beneficial.  I still strayed away from using the treadmill because of the hard surface.  My tender shins never liked running on that hard surface continuously.  However,  I have some friends that love running on treadmills for cardio or for even doing high interval sprint training.  It looks like this treadmill offers an excellent resistance program with its ability to incline the running surface.  This looks like a winner, and the video makes its case.

    • Thanks for sharing, Eric. Have you ever considered ellipticals? They are low-impact and may be beneficial for you.

      All the best!

  2. I learned everything from this article on Sunny ASUNA 7700 Treadmill. I’m very impressed. As a result of physical exercise, the body gains antidote. We should exercise regularly. Running is one of the mainstays of physical activity. I will use Sunny ASUNA 7700 Treadmill. I think this article is useful for everyone.
    Lastly, I would like to share this post on my social media so that everyone can know better about exercise.

  3. I like this treadmill! I think it’s the best option for me. Of all the other treadmills I’ve read about, this is the one that satisfies me the most. I don’t mind if the deck cannot be set in a horizontal position. I appreciate it has Quiet operation and no power consumption. Thanks! I’ll purchase this one!


Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.