1. Hand shake clockwise, counterclockwise direction to the body, shaking, body down; 2. A clear arrow mark indicating the users to operate 3. In the control wheel, diameter 150mm, equipped with a central steering wheel to facilitate the user to control the direction of the vehicle body; 4. High-low range: 820mm-520mm; 5. 4 pieces lifting PP guardrail, integral injection molding; 6. Dimensions: 1930*650*(820-520mm) 7. Standard accessories: mattress, I.V. pole frame;