The robot's size was chosen to allow it to operate freely in the human living space and to make it people-friendly. This size allows the robot to operate light switches and door knobs, and work at tables and work benches. Its eyes are located at the level of an adult's eyes when the adult is sitting in a chair. A height of 130cm makes it easy to communicate with.
Honda feels that a robot height between 130cm and that of an adult is ideal for operating in the human living space.