KingSmith WalkingPad X21 Foldable Treadmill
The KingSmith WalkingPad X21 Foldable Treadmill (often called WalkingPad X21, KS X21 WalkingPad, WalkingPad Double-Fold X21) is a smart treadmill designed for both walking and running with a strong focus on space-saving and user convenience. It features an advanced double-folding mechanism (folds 180° + 90°), a wide running surface, quiet operation, and intelligent controls (including NFC & app integration). All specifications are drawn from manufacturer data, product manuals, and trusted retailers for accuracy.
Features
Double-Fold / Space-Saving Design
The WalkingPad X21 supports two folding actions: a full 180° fold and an additional 90° fold, allowing it to compact significantly for storage. When folded, it occupies very little floor area (about 0.16 m²), letting users slide it under furniture or store upright.
Wide, Comfortable Running Surface
It has a generous running belt area of approximately 1210 mm × 460 mm, which gives ample space for walking or light jogging without feeling constrained. The belt often includes multiple layers (cushioning, non-slip surface) to reduce impact.
Quiet and Powerful Motor
Equipped with a brushless motor rated around 918 W, the X21 delivers relatively powerful output while keeping noise moderate (about 75 dB in no-load full-speed testing).
Speed Range & Smart Controls
The speed can be adjusted between 0.5 km/h up to 12 km/h, allowing for very slow walking up to jogging. Control is via a speed dial knob, handrail controls, remote, and via the KS Fit app. The treadmill also includes an OLED display integrated in the handrail that shows speed, time, distance, calories, steps. NFC connectivity is used for quick data sync.
Build, Stability & Safety Features
The frame is made using an aluminum alloy skeleton with ABS/plastic components, giving a balance of rigidity and lightweight design. It supports up to 110 kg of user weight. Safety features include a safety lock clip, anti-slip sides, child-lock functions, automatic standby mode when not in use, and overload protection.
Dimensions & Portability
When unfolded, its dimensions are roughly 1420 × 720 × 1020 mm. When folded, around 1007 × 711 × 225 mm in many configurations. Net weight is about 38 kg (gross weight higher due to packaging). It also features hidden wheels to make repositioning easier when folded
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