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WalkingPad X21 Facts: 176 Specifications & 62 Highlights

Still deciding? See why the WalkingPad X21 is a favorite among treadmills fans. It’s not just talk — it’s about those 176 specs, like general information, dimensions & weight, performance & motor & running surface & cushioning.

79 Points
WalkingPad
WalkingPad
WalkingPad X21 Double-Fold Treadmill
WalkingPad X21

Highlights 62

No extras. Just what matters.
79 Points

Why is WalkingPad X21 better than other treadmills ?

General Information

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Dimensions & Weight

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Performance & Motor

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Running Surface & Cushioning

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Console & Display

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Technology & Connectivity

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Safety & Compliance

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Durability & Maintenance

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Power & Electrical

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Noise & Environment

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Packaging & Assembly

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Quick Take

The essentials that matter—nothing extra

A fast snapshot of the WalkingPad X21, covering its standout specification and what you can expect right out of the box.

WalkingPad X21
WalkingPad X21

With a 1.5 CHP motor and a top speed of 4 mph, the WalkingPad X21 offers a compact running surface ideal for walking or light running. Its 0% incline provides an easy and gentle workout. Perfect for small apartments or home offices.

Specifications & Facts 176

Specs measured. Drama avoided.

From budget to build, this is the WalkingPad X21 treadmill reviewed like never before. Compare it to other treadmills and see why some specs stand out.

General Information 19

WalkingPad X21 Model Number

What is the model number?

80 WalkingPad X21 0 Votes TRX21F

80 Treadmills in this range SOLE-F80

WalkingPad X21
WalkingPad X21

This is the X21’s official model code used in packaging and manuals, useful for warranty or accessory matching.

A unique identifier assigned by the manufacturer.

WalkingPad X21 Weight Capacity

What is the weight capacity?

240 lbs 0 Votes
WalkingPad X21
292.84 lbs (Average)

WalkingPad X21
WalkingPad X21

Supports users up to 109 kg, ideal for most adults using it for walking or light jogging.

Maximum user weight the treadmill supports.

WalkingPad X21 Maximum User Height Suitability

What is the maximum user height suitability?

72 inch 0 Votes
WalkingPad X21
76.19 inch (Average)

WalkingPad X21
WalkingPad X21

Suitable for users up to about 183 cm tall. Taller users can still walk comfortably but may find the deck short for full running strides.

Maximum user height supported for safe stride length.

WalkingPad X21 Release Year

What is the release year?

88 WalkingPad X21 0 Votes 2021

87 Treadmills in this range 2024

The year the treadmill was first released.

WalkingPad X21 Model Name

What is the model name?

80 WalkingPad X21 0 Votes X21

81 Treadmills in this range A1 Pro

The commercial name of the treadmill model.

Dimensions & Weight 20

WalkingPad X21 Product Width

What is the treadmill width?

27.9 inch 0 Votes
WalkingPad X21
32.44 inch (Average)

WalkingPad X21
WalkingPad X21

Around 71 cm wide, narrow enough to fit between most desk or sofa spaces.

Overall width of the treadmill in use.

WalkingPad X21 Product Length

What is the treadmill length?

55.8 inch 0 Votes
WalkingPad X21
69.28 inch (Average)

WalkingPad X21
WalkingPad X21

About 142 cm long—roughly the width of a standard office desk, making it compact for small rooms.

Overall length of the treadmill in use.

WalkingPad X21 Product Height

What is the treadmill height?

41.4 inch 0 Votes
WalkingPad X21
51.62 inch (Average)

WalkingPad X21
WalkingPad X21

Stands about 105 cm tall, similar to the height of a countertop.

Overall height of the treadmill in use.

WalkingPad X21 Folded Width

What is the folded width?

27.9 inch 0 Votes
WalkingPad X21
32.18 inch (Average)

WalkingPad X21
WalkingPad X21

Around 71 cm wide, keeping the same slim profile when folded.

Width of the treadmill when folded for storage.

WalkingPad X21 Folded Length

What is the folded length?

39.6 inch 0 Votes
WalkingPad X21
45.56 inch (Average)

WalkingPad X21
WalkingPad X21

About 101 cm long when folded—compact enough to store upright or under a bed.

Length of the treadmill when folded for storage.

WalkingPad X21 Folded Height

What is the folded height?

8.8 inch 0 Votes
WalkingPad X21
45.49 inch (Average)

WalkingPad X21
WalkingPad X21

Just 22 cm tall when folded flat, perfect for under-bed storage.

Height of the treadmill when folded.

Performance & Motor 13

WalkingPad X21 Motor Power Peak

What is the peak motor power?

1.25 HP 0 Votes
WalkingPad X21
63.37 HP (Average)

WalkingPad X21
WalkingPad X21

Provides up to 0.93 kW of peak output, sufficient for walking and light running.

Maximum peak horsepower output of the motor.

WalkingPad X21 Maximum Speed

What is the maximum speed?

7.5 mph 0 Votes
WalkingPad X21
10.04 mph (Average)

WalkingPad X21
WalkingPad X21

Reaches about 12.1 km/h, fast enough for brisk walks and short jogs.

The highest running speed supported by the treadmill.

WalkingPad X21 Minimum Speed

What is the minimum speed?

0.6 mph 0 Votes
WalkingPad X21
0.44 mph (Average)

WalkingPad X21
WalkingPad X21

Starts as low as 1 km/h, gentle enough for rehabilitation or desk walking.

The lowest walking speed supported by the treadmill.

WalkingPad X21 Speed Increment Step

What is the speed increment step?

0.1 mph 0 Votes
WalkingPad X21
0.12 mph (Average)

WalkingPad X21
WalkingPad X21

Adjusts in fine steps of 0.16 km/h for smooth speed transitions.

The smallest possible speed adjustment step.

WalkingPad X21 Decline Range Minimum

What is the minimum decline?

0 % 0 Votes
WalkingPad X21

Treadmill in this range Who knows? (Help us out by suggesting one!)

The lowest decline level available.

WalkingPad X21 Decline Range Maximum

What is the maximum decline?

0 % 0 Votes
WalkingPad X21

Treadmill in this range Who knows? (Help us out by suggesting one!)

The maximum decline level supported.

Running Surface & Cushioning 15

WalkingPad X21 Noise Reduction Technology

What noise reduction technology is included?

85 WalkingPad X21 0 Votes Enclosed Motor

85 Treadmills in this range Cushion Dampening

WalkingPad X21
WalkingPad X21

The motor is enclosed to reduce sound, keeping noise levels near conversation volume during walking.

Type of design used to reduce treadmill noise.

WalkingPad X21 Belt Type

What is the belt type?

85 WalkingPad X21 0 Votes 8-Ply

82 Treadmills in this range 2-Ply

WalkingPad X21
WalkingPad X21

Uses an eight-layer construction for improved shock absorption and quieter operation.

Specifies the construction of the treadmill belt.

WalkingPad X21 Belt Thickness

What is the belt thickness?

1.6 mm 0 Votes
WalkingPad X21
1.63 mm (Average)

WalkingPad X21
WalkingPad X21

Around 0.06 inch thick, typical for compact walking treadmills.

Thickness of the treadmill belt for durability.

WalkingPad X21 Front Roller Diameter

What is the front roller diameter?

1.9 inch 0 Votes
WalkingPad X21
2.04 inch (Average)

WalkingPad X21
WalkingPad X21

Measures roughly 48 mm—compact rollers reduce vibration and keep the profile low.

Diameter of the front roller that drives the belt.

WalkingPad X21 Rear Roller Diameter

What is the rear roller diameter?

1.9 inch 0 Votes
WalkingPad X21
1.85 inch (Average)

WalkingPad X21
WalkingPad X21

Also about 48 mm, maintaining a smooth belt motion.

Diameter of the rear roller that supports the belt.

WalkingPad X21 Running Surface Material

What is the running surface material?

80 WalkingPad X21 0 Votes PVC

82 Treadmills in this range PVC

WalkingPad X21
WalkingPad X21

Durable PVC top layer ensures smooth belt movement and easy cleaning.

Material used for the treadmill’s running deck surface.

Console & Display 15

WalkingPad X21 Display Size

What is the display size?

1.27 inch 0 Votes
WalkingPad X21
6.96 inch (Average)

WalkingPad X21
WalkingPad X21

The compact display (about 3.2 cm) shows essential stats clearly without taking extra space.

Diagonal size of the console display.

WalkingPad X21 Display Type

What is the display type?

90 WalkingPad X21 0 Votes LED, OLED

86 Treadmills in this range LCD

Type of screen used for the console.

WalkingPad X21 Touchscreen Availability

Is the console a touchscreen?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicates if the console is a touchscreen.

WalkingPad X21 Backlit Display

Is the display backlit?

Yes 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicates if the display has backlighting.

WalkingPad X21 Workout Feedback Metrics

What feedback metrics are shown?

90 WalkingPad X21 0 Votes Speed, Time, Distance, Calories, Steps

90 Treadmills in this range Speed, Time, Distance, Calories, Heart Rate, Incline

Types of workout data shown on display.

WalkingPad X21 Heart Rate Monitoring Type

What type of heart rate monitoring does it support?

85 WalkingPad X21 0 Votes Bluetooth

86 Treadmills in this range Contact Grips, Bluetooth

Method used for monitoring heart rate.

Technology & Connectivity 17

WalkingPad X21 Bluetooth Support

Does it support Bluetooth?

Yes 0 Votes WalkingPad X21

Yes Treadmills in this range

WalkingPad X21
WalkingPad X21

Lets you pair the treadmill with the KS Fit app to track your stats wirelessly.

Indicates if the treadmill supports Bluetooth connectivity.

WalkingPad X21 Wi-Fi Support

Does it support Wi-Fi?

Yes 0 Votes WalkingPad X21

Yes Treadmills in this range

WalkingPad X21
WalkingPad X21

Enables direct app connectivity and firmware updates when connected to your home network.

Indicates if the treadmill can connect via Wi-Fi.

WalkingPad X21 NFC Pairing

Does it support NFC pairing?

Yes 0 Votes WalkingPad X21

Yes Treadmills in this range

WalkingPad X21
WalkingPad X21

Allows quick one-tap connection with compatible Android devices.

Ability to connect devices using NFC.

WalkingPad X21 ANT+ Support

Does it support ANT+?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicates if the treadmill supports ANT+ sensors.

WalkingPad X21 App Connectivity

Does it have app connectivity?

Yes 0 Votes WalkingPad X21

Yes Treadmills in this range

Ability to connect with fitness apps.

WalkingPad X21 Fitness Tracking Sync

Can it sync with fitness trackers?

Yes 0 Votes WalkingPad X21

Yes Treadmills in this range

Ability to sync workout data with fitness trackers.

Safety & Compliance 11

WalkingPad X21 Safety Key or Clip

Does it have a safety key or clip?

Yes 0 Votes WalkingPad X21

Yes Treadmills in this range

A removable safety key or clip that stops the treadmill if detached.

WalkingPad X21 Emergency Stop Button

Does it have an emergency stop button?

Yes 0 Votes WalkingPad X21

Yes Treadmills in this range

A dedicated button that halts the treadmill immediately.

WalkingPad X21 Side Rail Width

What is the side rail width?

3 inch 0 Votes
WalkingPad X21
3.5 inch (Average)

Width of the treadmill’s side rails for safe footing.

WalkingPad X21 Slip-Resistant Surface

Does it have a slip-resistant surface?

Yes 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicates if the treadmill surface is slip-resistant.

WalkingPad X21 Overload Protection

Does it have overload protection?

Yes 0 Votes WalkingPad X21

Yes Treadmills in this range

Prevents the motor from overheating or overloading.

WalkingPad X21 Compliance Certifications

What compliance certifications does it have?

80 WalkingPad X21 0 Votes ETL

85 Treadmills in this range CE, UL

Certifications that confirm product compliance with safety standards.

Comfort & Convenience 15

WalkingPad X21 Cooling Fan

Does it have a cooling fan?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicates if the treadmill has an integrated cooling fan.

WalkingPad X21 Cup Holder

Does it have cup holders?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicates if cup holders are available on the treadmill.

WalkingPad X21 Accessory Tray

Does it have an accessory tray?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Availability of a tray for small accessories.

WalkingPad X21 Handlebar Padding

Are the handlebars padded?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicates if handlebars are padded for comfort.

WalkingPad X21 Adjustable Handrails

Are the handrails adjustable?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicates if the treadmill handrails can be adjusted.

WalkingPad X21 Integrated Storage Pockets

Does it have integrated storage pockets?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Built-in pockets for storing items.

Training & Programs 13

WalkingPad X21 Interval Training Mode

Does it have interval training mode?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicates if the treadmill supports interval training.

WalkingPad X21 Hill Training Programs

Does it include hill training programs?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Pre-programmed workouts simulating hill climbs.

WalkingPad X21 Heart Rate Training Programs

Does it include heart rate training programs?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Guided programs based on heart rate zones.

WalkingPad X21 Speed Training Programs

Does it have speed training programs?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Programs designed to improve running speed.

WalkingPad X21 Target Distance Programs

Does it support target distance programs?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Programs that let users set distance goals.

WalkingPad X21 Target Time Programs

Does it support target time programs?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Programs that let users set workout time goals.

Durability & Maintenance 10

WalkingPad X21 Expected Lifespan

What is the expected lifespan?

5 years 0 Votes
WalkingPad X21
8.08 years (Average)

WalkingPad X21
WalkingPad X21

The 5 years are assumed lifespan.

Estimated years of reliable use.

WalkingPad X21 Lubrication Type

What is the lubrication type?

80 WalkingPad X21 0 Votes Manual

84 Treadmills in this range Manual

Defines how the treadmill belt and deck are lubricated.

WalkingPad X21 Belt Lubrication Indicator

Does it have a belt lubrication indicator?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicator that alerts when lubrication is needed.

WalkingPad X21 Frame Material

What is the frame material?

85 WalkingPad X21 0 Votes Aluminum, Plastic

87 Treadmills in this range Steel

The material used to build the treadmill frame.

WalkingPad X21 Corrosion Resistance

Is the treadmill corrosion resistant?

Yes 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicates if the frame or parts resist corrosion.

WalkingPad X21 Maintenance Alerts

Does it provide maintenance alerts?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Alerts that notify when maintenance is required.

Power & Electrical 9

WalkingPad X21 Power Requirement Voltage

What is the power requirement voltage?

110 Volt 0 Votes
WalkingPad X21
129.21 Volt (Average)

WalkingPad X21
WalkingPad X21

Works with standard U.S. household outlets (120V nominal).

The voltage required to operate the treadmill.

WalkingPad X21 Power Consumption

What is the power consumption?

918 Watt 0 Votes
WalkingPad X21
1,259.59 Watt (Average)

WalkingPad X21
WalkingPad X21

Draws about 0.92 kW of power—similar to a small microwave when in active use.

Average power used during operation.

WalkingPad X21 Cord Length

What is the cord length?

6 ft 0 Votes
WalkingPad X21
6.88 ft (Average)

WalkingPad X21
WalkingPad X21

About 1.8 m long—place the treadmill close to a power outlet for safe use.

Length of the treadmill’s power cord.

WalkingPad X21 Plug Type

What is the plug type?

80 WalkingPad X21 0 Votes NEMA 5-15

83 Treadmills in this range NEMA 5-15

Defines the plug type for power connection.

WalkingPad X21 Circuit Breaker Requirement

What is the circuit breaker requirement?

80 WalkingPad X21 0 Votes 15A

83 Treadmills in this range 15A

Specifies the breaker needed for safe use.

WalkingPad X21 Energy Saving Mode

Does it have energy saving mode?

Yes 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicates if the treadmill reduces power in idle mode.

Noise & Environment 10

WalkingPad X21 Operating Temperature Range

What is the operating temperature range?

85 WalkingPad X21 0 Votes 32–104°F

84 Treadmills in this range 32–104°F

WalkingPad X21
WalkingPad X21

Performs best between 0–40 °C; keep it indoors away from humidity or direct heat.

Temperature range for safe operation.

WalkingPad X21 Storage Temperature Range

What is the storage temperature range?

85 WalkingPad X21 0 Votes 14–122°F

84 Treadmills in this range 14–122°F

WalkingPad X21
WalkingPad X21

Safe to store between −10–50 °C; avoid freezing or damp environments.

Safe temperature range for storage.

WalkingPad X21 Noise Level

What is the noise level?

60 dB 0 Votes
WalkingPad X21
64.09 dB (Average)

WalkingPad X21
WalkingPad X21

Produces around 60 dB during normal walking, comparable to casual conversation.

Average noise level during normal use.

WalkingPad X21 Noise Level at Max Speed

What is the noise level at max speed?

75 dB 0 Votes
WalkingPad X21
70.3 dB (Average)

WalkingPad X21
WalkingPad X21

At top speed, noise reaches about 75 dB, similar to a vacuum cleaner two rooms away.

Noise produced when treadmill runs at maximum speed.

WalkingPad X21 Maximum Altitude Limit

What is the maximum altitude limit?

6,562 ft 0 Votes
WalkingPad X21
8,007.75 ft (Average)

Highest altitude at which treadmill can operate safely.

WalkingPad X21 Humidity Resistance

Is it humidity resistant?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicates if the treadmill can resist moisture.

Packaging & Assembly 9

WalkingPad X21 Assembly Time Estimated

What is the estimated assembly time?

5 min 0 Votes
WalkingPad X21
56.6 min (Average)

WalkingPad X21
WalkingPad X21

Ready to use in roughly five minutes—just unfold, attach accessories, and plug in.

Estimated time to assemble the treadmill.

WalkingPad X21 Assembly Required

Does it require assembly?

No 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicates if the treadmill requires assembly.

WalkingPad X21 Tools Required for Assembly

What tools are required for assembly?

75 WalkingPad X21 0 Votes None

84 Treadmills in this range Screwdriver, Wrench, Allen Key

Tools needed to assemble the treadmill.

WalkingPad X21 Instruction Manual

Is an instruction manual included?

Yes 0 Votes WalkingPad X21

Yes Treadmills in this range

Indicates if a manual is provided with the product.

WalkingPad X21 Packaging Type

What is the packaging type?

80 WalkingPad X21 0 Votes Cardboard Box

82 Treadmills in this range Cardboard Box

Defines the packaging style used.

WalkingPad X21 Shipping Method

What is the shipping method?

80 WalkingPad X21 0 Votes Standard Delivery

81 Treadmills in this range Standard Delivery

Defines how the treadmill is shipped.

Surveys

Because hot takes deserve votes.

WalkingPad X21 Running Speed Levels

How would you rate the running speed options on this treadmill?

Intense sprinting — Over 13 mph 0 Votes
Fast running — 10 to 12 mph 0 Votes
Moderate pace — 7 to 9 mph 0 Votes
Very slow — Up to 6 mph 0 Votes

WalkingPad X21 Durability and Lifespan

How durable does this treadmill feel over long-term use?

Built to last — Over 8 years 0 Votes
Long-lasting — 5 to 7 years 0 Votes
Average durability — 2 to 4 years 0 Votes
Wears out quickly — Less than 2 years 0 Votes

WalkingPad X21 Comfort Level of Running

How comfortable is it to run or walk on this treadmill?

Very smooth and enjoyable 0 Votes
Comfortable, easy on joints 0 Votes
Just okay, manageable for short use 0 Votes
Uncomfortable, feels stiff 0 Votes

WalkingPad X21 Noise Level

How noisy is this treadmill during use?

Whisper quiet, barely noticeable 0 Votes
Pretty quiet, not bothersome 0 Votes
Noticeable but tolerable 0 Votes
Super loud, very distracting 0 Votes

WalkingPad X21 Size and Space Fit

How well does the size of this treadmill fit into a home or workout space?

Super space-saving — Under 65 inches long 0 Votes
Compact fit — 65 to 74 inches long 0 Votes
Large but manageable — 75 to 85 inches long 0 Votes
Way too bulky — Over 85 inches long 0 Votes

WalkingPad X21 Power Consumption

How efficient is the power consumption of this treadmill?

Energy efficient — Under 1000 watts 0 Votes
Moderate use — 1000 to 1499 watts 0 Votes
High usage — 1500 to 2000 watts 0 Votes
Energy guzzler — Over 2000 watts 0 Votes

WalkingPad X21 Setup Experience

How easy was it to set up this treadmill?

Super simple, ready in no time 0 Votes
Fairly easy, just a few steps 0 Votes
Took some effort, but doable 0 Votes
Nightmare to assemble 0 Votes

WalkingPad X21 Design Appeal

How appealing is the design and look of this treadmill?

Sleek and impressive 0 Votes
Stylish and modern 0 Votes
Decent but nothing special 0 Votes
Plain and outdated 0 Votes

WalkingPad X21 Pricing

How do you feel about the pricing of this treadmill?

Great value for money 0 Votes
Pretty good price 0 Votes
Fair deal 0 Votes
Kinda pricey 0 Votes
Crazy expensive 0 Votes

WalkingPad X21 Motor Power

How powerful is the motor of this treadmill?

Extremely powerful — Over 3.5 HP 0 Votes
Very good — 3.0 to 3.5 HP 0 Votes
Moderate — 2.5 to 3.0 HP 0 Votes
Weak — 2.0 to 2.5 HP 0 Votes
Very weak — Under 2.0 HP 0 Votes

Guides 1

Yes, we brought proof.

Files 1

King Smith WalkingPad X21 Treadmill Owner's Manual

manuals.plus
manuals.plus

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WalkingPad X21
WalkingPad X21
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Contributed Users 5

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