Describe:Non-electric: The space-saving treadmill does not require a power socket, and the maintenance cost is low. The speed is controlled by the runner himself, unpowered, mechanical walking machine.Function: walking, running.Easy to install, just turn 2 screws.One-key lock makes the action easier.The height of the armrest can be adjusted. It is favored by women and teenagers, depending on height. After loosening the plastic knob by hand and adjusting the height of the armrest, tighten the plastic knob.Secondary slope adjustment, different slope training with different intensity.High-precision running belt.anti-static surface layer, to avoid harm to the human body, greater friction, non-slip and wear-resistant.Resistance wheel design. Equipped with resistance flywheel, the effect is remarkable and the movement process is smoother.LED display: display time/distance/speed/calorie consumption.Fold immediately to save space.Move the wheels and run anywhere, anytime.Feature:Colour: BlackMaterial: SteelDimensions: 135 x 95 x 52 cm / 53.1 x 37.4 x 20.5 inCarrying capacity: 110kgBattery: 1xAA battery (not included, the battery needs to be purchased with more prominent positive and negative poles)Weight: about 16kgInclude:1 x treadmill1 x manual