Sunny Health & Fitness SF-T7705 Treadmill

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Sunny SF-T7705

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220 lbsAutomatic,
15 levels
2.2 HP,
0.5-9.0 MPH
9 preset

Although the Sunny SF-T7705 is one of the Sunny Health & Fitness treadmills released in 2017, it still is available. It features a similar deck construction and motor to the SF-T7603, however, it has an automatic incline system and a superior console. It’s a folding treadmill made for home use, for walking and jogging workouts, but does provide speed up to 9.0 MPH.

Key Features and Specifications

  • Assembled dimensions: 64L x 27W x 50.5H inches (162.5L x 68.5W x 128H cm)
  • Tread belt dimensions: 49L x 15.5W inches (124.4 x 39.3 cm)
  • Assembled weight: 112 lbs (50.8 kg)
  • Supported weight: 220 lbs (100 kg)
  • Incline: Automatic, 15 levels
  • Motor: 2.20 HP, 0.5-9.0 MPH
  • Console: 9 programs, Bluetooth
  • Warranty: Frame 3 years / Parts 180 days

Frame and deck

The Sunny Health & Fitness SF-T7705 features a steel frame combining ovalized and rectangular bars in its construction. It’s a light-capacity machine, though; its deck is only rated for users up to 220 lbs (100 kg).

All the steel parts in the treadmill’s frame are coated with a rust-resistant paint finish. The color used is gray, this being the only color available for this model. Also, the unit integrates several ABS parts. For example, the side rail covers, the motor cover, the console dashboard, and several other small covers are made of durable ABS material.

The Sunny SF-T7705 is not a large treadmill. However, it still takes approx. 64″L x 27″W (162.5 x 68.5 cm) of floor space. Plus, you will have to allow at least three feet of clearance at the rear of the deck, and at least two feet of space on each side of it for safe usage.

The machine has a foldable design, though. Its deck can be folded and locked in upright position. With the deck folded up, its length is reduced to 34.5″ (87.6 cm) while its height gains a few inches. The folding mechanism involves an air pressure cylinder which slowly lowers the deck to prevent damage.

The unit also has excellent portability. The front metallic base of the frame is equipped with two small wheels which ease its relocation when it is folded. The two rear feet of the treadmill also have wheels, but they only serve as extra stabilizers.

The deck of the Sunny SF-T7705 integrates multiple cushioning elements. To begin with, it has 6 internal cushions (3 on each side), and 4 silicone pads (2 on each side) which are visible on the outside, meant to reduce vibration. This being said, walking or running on this treadmill is considerably more forgiving on your joints than walking or running on concrete or asphalt.

Last but not least, this Sunny Health & Fitness treadmill offers a walking platform of 49″L x 15.5″W (124.4 x 39.3 cm). Therefore, it can accommodate users up to 6’0″ (183 cm). Taller users may need a longer walking platform especially for running.

Incline and step-up height

The Sunny SF-T7705 is equipped with an automatic incline system. This means you can adjust the incline during your workout from the console. Also, if one of the workout programs is in use, the machine will auto-adjust the incline of the deck.

The incline system consists of a motor separate from the drive motor and a small lift placed at the front of the deck. When you adjust the incline or when the console automatically adjusts the incline, the lift slowly elevates the front of the deck.

The treadmill makes available 15 levels of incline, from 0% to 15%. The incline increments are 1%. The console offers controls for gradual incline adjustment and quick selection controls for the 3%, 6%, and 12% incline levels.

The deck step-up height is approx. 6″ (15 cm) when the incline is set to 0%. Conversely, by adjusting the incline all the way up to the 15th level, the front of the deck will gain a few extra inches in height. Therefore, to avoid any inconveniences, it is recommended to use this treadmill in a room with a ceiling that is at least 15″ (38 cm) higher than your own height.

Drive motor

The Sunny Health & Fitness SF-T7705 is an electric treadmill. Therefore, it requires an external power source. It integrates a 2.20 HP motor which is not one of the most powerful but should withstand running workouts with no problem. It also features a small flywheel for improved stability and reduced vibration.

Similar to the motor on the Efitment T012, the one on this Sunny treadmill offers a speed range between 0.5 and 9.0 MPH. Although the starting speed of the running belt is 0.5 MPH, the speed can be adjusted in increments of 0.1 MPH. This type of micro-adjustment is quite a plus as it gives you the possibility to change your pace with ease, without losing balance.

Just as for incline, if you choose to exercise by using one of the onboard programs, the machine will auto-adjust the speed of the running belt. Differently put, some of the programs will auto-adjust both the incline of the deck and the speed of the belt. Also, along with the gradual speed controls, the console provides quick speed control buttons for the 2 MPH, 4 MPH, and 6 MPH.

Last but not least, since it’s a basic motor, its power consumption is also minimal. In other words, even if you will be using it daily, it shouldn’t add more than a few dollars to the electricity bill. Also, the motor itself doesn’t generate a lot of noise when in use, but depending on how fast you go, your cadence may generate more or less noise.


The Sunny SF-T7705 treadmill is equipped with a mid-range console. It features an LCD display with LED backlight for improved readability. The display is divided into multiple fields in order to show as many workout metrics as possible at once. The display shows time, distance, steps, calories burned, heart rate, speed, and incline.

Speed and distance are shown in miles and MPH, while the center area of the display shows distance as a 0.25 mile (400 m) track, counting each lap that you have completed. Also, for the console to read your pulse, you have to hold on to the sensors integrated into the machine’s side grips. The console is not telemetric and cannot read your pulse through a wireless armband or chest strap.

The console offers 9 workout programs. All of them are interval-based; all of them adjust speed and incline. Plus, the console is Bluetooth capable. Therefore, you can sync it with your smartphone via the Sunny Health & Fitness app in order to track your progress online, review your workout history and even adjust the speed and incline from your phone.

A Body Mass Index function is also available. This gives you the possibility to input personal data such as gender, age, height, and weight in order to calculate your Body Mass Index. The Body Mass Index is used to test the relation between your height and weight.

Among other notable features provided by the machine’s console, we can count the sound system, the tablet holder, and the accessory holders. The sound system consists of two speakers integrated at the top of the console. It is compatible with most MP3 players, smartphone or tablets. Therefore, you can connect your device to the console via the provided AUX cable in order to play your music through the treadmill’s console. However, it is important to mention here that the Bluetooth function does not apply to the unit’s sound system.

The tablet holder consists of a small shelf placed under the console display. And finally, the console dashboard has two large bottle or accessory holders on each side.

Assembly and Maintenance

The treadmill comes pre-assembled. You only have to unbox it, unfold it, lock the two front bars in upright position via several screws, and add the two joint covers. It’s a fairly simple task and shouldn’t take more than 15 minutes. Plus, the manual provides all the necessary instructions for this, and all the tools you will be needing are included.

For maintenance, periodic belt and deck lubrication is required. The belt should be kept clean to prevent any debris from being caught into the rollers or the motor. Other than this, it is recommended to periodically check the unit for loose bolts or parts, and re-tighten them if necessary.

The Pros

  • Sturdy construction for a walking treadmill;
  • Folding deck, space-saving design;
  • Transport wheels;
  • Integrated deck cushioning;
  • Automatic incline, 15 levels (0% – 15%);
  • Speed settings up to 9.0 MPH;
  • Speed adjustment increments of 0.1 MPH;
  • Speed and incline controls built-in the side grips;
  • Quick adjustment buttons for 3% ,6%, 12% incline, and 2, 4, 6 MPH;
  • Low power consumption;
  • LED-backlit display;
  • 9 preset workout programs;
  • Race track function which shows the distance in 0.25-mile laps with lap count;
  • BMI function;
  • Bluetooth connectivity and compatibility with the Sunny Health & Fitness app for online progress tracking;
  • Lubrication reminder function;
  • Sound system included;
  • Tablet holder included;
  • Accessory trays built-in the dashboard;
  • Pulse reading function included;
  • Very easy to assemble;
  • Little maintenance required;
  • Decent warranty.

The Cons

  • A tablet placed on the tablet holder will cover the console display.


The Sunny Health & Fitness SF-T7705 is an electric treadmill designed for home use. It is equipped with a 2.20 HP motor, an automatic incline system with 15 levels, and a console with online connectivity and 9 preset programs. It’s a fairly decent machine for walking, jogging, and running, muscle toning, maintaining a great cardiovascular shape, and losing weight. And finally, it’s one of the most affordable treadmills with an automatic incline, offering excellent value for the price.

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