KALWOL X400S 4-in-1 Walking Pad Treadmill

The KALWOL X400S is a compact walking pad treadmill listed with app compatibility, automatic incline and speeds from 0.6 to 6.2 mph. Its speed range and workout programs suit walking and light jogging, while conflicting motor, incline and running-belt details warrant checking the selected listing before purchase.

At a glance

The listed 0.6–6.2 mph range covers slow desk walking through light jogging, according to the product description.
Manufacturer claims a 14% automatic incline and app-compatible guided or interactive workouts.
A remote and LED display are described for adjusting speed and viewing workout data.
The listing describes a 12-program selection and countdown targets for time, distance or calories.
Compact listed dimensions and transport wheels are intended to ease storage in a home or office.

Price

$199.99Save 50%

Reference price: ~~$399.98~~

Price checked: Nov 14, 2026

View offer

Pros and cons

Pros

Wide stated speed range supports both slow walking and jogging up to 6.2 mph.
Incline adjustment, app compatibility and built-in programs offer several ways to vary sessions.
The listed height is 5.35 inches, and the maker describes wheels for moving and storing the unit.

Cons

The maximum speed is 6.2 mph, so this is not presented as a fast-running treadmill.
The 20-inch overall width does not establish the belt width. The listed running-surface measurement is different and needs confirmation.

Technical specifications

14 specifications

Identity
Brand	KALWOL
Model	X400S

Dimensions and installation
Dimensions listed	49"D x 20"W x 5.35"H
Weight listed	24 kg

Materials
Material listed	Acrylonitrile Butadiene Styrene (ABS), Alloy Steel

Speed and programs
Minimum speed	0.6 miles_per_hour
Maximum speed	6.2 miles_per_hour
Workout programs	12

Incline and capacity
Maximum incline percentage	14
Maximum weight recommendation	350 pounds

Motor and controls
Maximum horsepower	3.5 hp
App compatibility	APP Compatible

Included components
Components listed	Lubricant, Power Cord, Remote Control, Tool Kit, User Manual

Warranty
Warranty description	1 Year

What to know before buying

Listing details to confirm

Listing details are contradictory or inconsistent: the title says 2.75HP and 10% incline, while detail fields and feature text say 3.5 hp and 14%. The title mentions a speaker, but the supplied feature details do not confirm one. The described running surface is 40"×16", while the overall listed dimensions are 49"D x 20"W x 5.35"H. Confirm the selected model’s motor, incline, speaker and belt dimensions before buying. The 350-pound capacity and performance claims are manufacturer statements.

What’s in the box

Included

Lubricant
Power cord
Remote control
Tool kit
User manual

Who is it for?

A good fit for

Home or office users seeking a compact treadmill for desk walking and light jogging.
Buyers interested in incline sessions, app-based workouts or preset programs.
People with limited storage space who want a unit described as movable on wheels.

Less suited to

Runners needing speeds above 6.2 mph.
Buyers who need confirmed speaker functionality or a definitive motor rating, incline maximum or running-belt size before ordering.

KALWOL X400S 4-in-1 Walking Pad Treadmill · photo 2 — Additional product photo 2

Customer reviews on Amazon

5 / 5 · 29 ratings

5 stars100%100%
4 stars0%0%
3 stars0%0%
2 stars0%0%
1 star0%0%

Aggregate ratings are uniformly five-star in the supplied data, but the sample is limited and no written review summaries are provided. Ratings alone do not establish why customers were satisfied or indicate how the treadmill performs. Buyers should weigh that limited signal against the model’s stated walking and light-jogging range and resolve the listing’s conflicting specifications.

Frequently asked questions

What speeds does the listing give?

The product details state a minimum of 0.6 miles per hour and a maximum of 6.2 miles per hour. The description associates that range with desk walking, walking and jogging.

How steep is the incline?

The title says 10%, while the details and feature text claim up to 14% automatic incline. These claims conflict, so confirm the incline for the selected listing.

Does it include a speaker?

The title mentions a speaker, but the supplied feature details do not confirm it. Check the selected listing if a speaker is important to you.

What comes in the box?

The listed included components are lubricant, power cord, remote control, tool kit and user manual.