... . Light, 17.8KG, raised children and adults have to move, to go upstairs, to the elevator. 3. simple, high-tech and wireless ... . comfortable, fully ergonomic design makes it easy and fast. Small, flexible and easy to carry, mainly in line with national standards of ... hour. Completely solve the traditional electric cars bulky, heavy, inconvenient to carry, and the government does not allow the road and ...