WalkingPad Foldable Pad with Removable Handle Bar
The WalkingPad WP400R4 treadmill, marketed by KingSmith as the WalkingPad Z1R, is a foldable under-desk walking pad built around one specific idea: a handle bar you can add for stability or remove entirely for a wider, open desk surface. It runs 1 to 5 mph on a brushless 2 hp motor, folds flat in half for storage under a bed or sofa, and rides on an 8-layer cushioned belt rated for riders up to 242 lb. It sits toward the slower, walking-focused end of KingSmith's own lineup, distinct from the faster, vertical-fold X21 and the quicker Z3 Hybrid+.
- Handle bar genuinely detaches in seconds, so the pad doubles as a supported walker for warm-ups and a wide, open surface for under-desk use
- 8-layer cushioned belt and an aluminum frame feel built for the price tier, not just marketed that way
- 242 lb weight capacity and a 47.6 by 15.7 inch deck give more room than the slimmest compact pads in this catalog
- 180 degree flat-fold design stores under a bed, sofa, or in a closet without needing to stand it upright
- LED display plus a remote control and app cover the basics, speed, distance, time, calories, without locking anything behind a subscription
Where the WP400R4 lands against the other handlebar-equipped pads in this catalog: Loses to the Z3 Hybrid+ and JAGJOG JT57 on top speed, both faster for buyers who want to jog, Beats the Sunny Treadpad Slim on top speed and deck size, loses to it on warranty length, Wins on handle bar flexibility; the only one of the four built to come off entirely rather than just fold or adjust.
Which rider are you?
From this page to your first ride
Read the tested review
Specs, the removable handle bar's real job, and the review-pool caveat behind the star rating, all on one page.
Check today's price
One click to Amazon. We check the listing regularly and note it here if that changes.
Decide handle bar in or out
Install it for stability during your first sessions, then remove it in seconds once you're confident, for the widest open desk surface.
Where the WP400R4 earns its spot in this class
A handle bar that actually comes off
Most 2-in-1 walking pads fix their handlebar in place. This one detaches in seconds: install it for extra stability during warm-ups or recovery, or take it off entirely for a wider, open walking surface under a desk. It is the one feature in this ASIN's own bullets that is genuinely switchable rather than just adjustable.
Belt and frame built for the price tier
An 8-layer shock-absorbing belt and an aluminum frame are build details budget walking pads often skip. Combined with a 242 lb capacity and a 47.6 by 15.7 inch deck, the WP400R4 has more room to move on than the slimmest compact pads in this catalog.
What owners keep saying
This review pulls from the 4.4 out of 5 rating behind 289 Amazon owners on this Z1R listing, but the eight review excerpts Amazon surfaced turned out to be a mixed batch. Five of the eight describe KingSmith's MC11, a different, faster treadmill, named directly in three and identifiable by a 7.5 mph top speed in the other two, a ceiling this 5 mph pad does not have. That leaves three usable excerpts, all generic: easy assembly, quiet running, and a small footprint praised by an older or less mobile walker. We are treating owner sentiment here as directionally positive but unverified for this exact model rather than building specific claims on top of thin evidence.
The honest cons
- 5 mph top speed is brisk-walking pace, not real jogging, despite the 'light jogging' language in Amazon's own bullets
- Five of the eight review excerpts tied to this listing describe a different, faster KingSmith model, so the evidence behind the 4.4 rating is thinner than it looks for this exact machine
- No decibel figure is published anywhere for this model, only general 'low-noise' marketing language
- 1 year warranty is short next to the Sunny Treadpad Slim's 3-year frame coverage in the same subcategory
WalkingPad WP400R4 (Z1R) vs Z3 Hybrid+ vs JAGJOG JT57 vs Sunny Treadpad Slim
Weighing this walkingpad wp400r4 treadmill against the other handlebar pads in this catalog comes down to speed and warranty: the Z3 Hybrid+ and JAGJOG JT57 both run faster for buyers who actually want to jog, while the Sunny Treadpad Slim trades speed for a longer frame warranty and a coaching app.
| WalkingPad Z1R (WP400R4) | WalkingPad Z3 Hybrid+ | JAGJOG JT57 | Sunny Treadpad Slim | |
|---|---|---|---|---|
| Top speed | 1 to 5 mph | 1 to 6.5 mph | Up to 7.5 mph | 0.5 to 3.7 mph |
| Motor | 2 hp, brushless | 2 hp | 2.5 hp | 1.5 hp |
| Weight capacity | 242 lb | 242 lb | About 300 lb (136 kg) | 245 lb |
| Handle bar | Fully removable in seconds | Fixed adjustable handrails | Height-adjustable handlebar | Integrated 'trekking pole' handlebars |
| Warranty | 1 year | 1 year | 1 year | 3-yr frame, 180-day parts |
| Our take | Best stability-when-you-want-it flexibility | Faster ceiling, no removable handlebar | Fastest of the four, closest to real jogging | Slowest, longest frame warranty, built-in app coaching |
| Spec | WalkingPad Foldable Pad with Removable Handle Bar |
|---|---|
| Model | WalkingPad Z1R, model number WP400R4 |
| Speed range | 1 to 5 mph |
| Motor | Brushless, 2 hp |
| Weight capacity | 242 lb |
| Deck | 47.6 in long x 15.7 in wide, about 1.69 in thick |
| Handle bar | Removable in seconds; install for stability, remove for an open surface |
| Belt | 8-layer shock-absorbing cushioning |
| Frame | Aluminum |
| Fold | 180 degree flat-fold |
| Set-up dimensions | 55.9 in D x 23.2 in W x 37.9 in H |
| Folded size | 49.2 x 23.2 x 5.5 in |
| Item weight | 57 lb |
| Display | LED, shows speed, distance, time, calories |
| Controls | Included remote control plus companion app |
| Warranty | 1 year |
FAQ
What is the actual model behind this listing, the WalkingPad Z1R or something else?
This listing's own Amazon data confirms it directly. Model Number reads WP400R4, Model Name reads WalkingPad Z1R, and Manufacturer Part Number reads Z1R, all pointing to the same product, distinct from the faster WalkingPad X21, the Z3 and Z3 Hybrid+, and the WalkingPad C2, all separate listings in this catalog.
Is this a walking pad or a 2-in-1 jogging treadmill?
This falls closer to the walking-pad side of that line than the jog-capable 2-in-1 side. Our Walking Pads guide draws the boundary at whether a machine's speed range actually supports jogging, and this one runs 1 to 5 mph, brisk-walking pace at best, below the 6.5 to 7.5 mph range of the true 2-in-1 pads in this catalog subcategory. The removable handle bar's job, per Amazon's own description, is stability during warm-ups and recovery, not sustained running support. Amazon's bullets stretch the description to 'light jogging,' but that phrase is doing a lot of work at 5 mph.
Can the handle bar really be removed, or is that just marketing language?
Amazon's own bullets describe it as a sturdy, detachable bar that installs for extra stability during warm-ups or recovery and comes off in seconds for a wider, open walking surface suited to under-desk use. That switchability is the actual selling point of this model.
What is the real weight capacity?
242 lb, per Amazon's own structured spec table for this listing, consistent across every source available for this ASIN with no conflicting figure found.
How loud is it?
There is no published decibel figure for this exact model in the sources available. Amazon's own copy describes it only in general terms, 'low-noise performance' and 'whisper-quiet workouts.' One of the three review excerpts confirmed to belong to this model calls it a 'quiet space saver,' which lines up with the marketing language but is not a measured number.
Do I need the WalkingPad app, or does the remote work on its own?
The remote that ships in the box handles the basics, speed changes and start and stop, without the app. The app adds progress tracking and history on top of that, but it is optional rather than required to run the machine.
Why does the star rating look stronger than the review excerpts suggest?
Because the review excerpts Amazon surfaced for this listing are contaminated. Five of the eight describe a different, faster KingSmith treadmill, the MC11, either by name or by a 7.5 mph top speed this 5 mph pad does not have. The 4.4 out of 5 aggregate behind this walkingpad wp400r4 treadmill is still real, but the qualitative detail behind it is thinner than the excerpt count implies once the mismatched reviews are removed.
What comes in the box?
Lubricant, the power cord, a remote control, a printed user manual, and a wristband, per Amazon's Included Components field. It runs on corded power.
The verdict
The short version: the WalkingPad WP400R4 treadmill (WalkingPad Z1R) is a well-built walking pad whose headline feature, a fully removable handle bar, does exactly what it claims: install it for extra stability during warm-ups or recovery, or take it off in seconds for an open, under-desk surface. The aluminum frame, 8-layer cushioned belt, and 242 lb capacity are solid for the price tier, and the 4.4 out of 5 aggregate across 289 Amazon owners backs that up on paper. The catch: five of those eight review excerpts describe a different, faster KingSmith model, so the real evidence behind the rating for this exact machine is thinner than it looks.
Buy it if you want a genuine desk walking pad with the option of a stability handle, and a 5 mph ceiling that is brisk walking pace works for you. Skip it if you specifically want to jog; KingSmith sells faster models built for that, and this isn't one of them.
If it’s close but wrong
WalkingPad Foldable Pad with Removable Handle Bar