The U3-X features a compact, one-wheel style design that allows the operator to move freely side-to-side, forward, backward, or diagonally by simply leaning the upper body to shift body weight. This personal mobility solution, which combines the capabilities of a person and a vehicle, lets the user move in any direction, turn, stop, and control their speed, just as if they were walking under their own power.
The high degree of freedom manifested in the U3-X's movement derives from the use of balance control technology developed as part of ASIMO research and the proprietary* Honda Omni Traction Drive System, the first of its kind in the world. We kept the device as small as possible—it fits between the feet in order to provide a comfortable ride that inspires peace of mind, keep the user's eyes level with pedestrians so that a natural line of sight can be maintained, and enable hands-free movement.
Even with all the technology it incorporates, the U3-X weighs less than 10 kilograms, allowing it to be easily carried.
UNI-CUB, an evolution of the U3-X toward commercialization, is designed for use in indoor spaces and facilities with lots of foot traffic. Compared to the U3-X, it is distinguished by improved stability and travel performance as well as an additional turning wheel that has been uncoupled from its balance control, making it easier to turn the unit. Since the device can be controlled either by shifting one's body weight or by choosing a direction and speed with a smartphone or other touch-panel device, it's easy to use, even for beginners.
*According to Honda research.
Basic specifications are available here.