Acrobot Robot Manufactured by Yonezawa, Japan 1968 - Plastic battery operated tumbling robot. Advances with walking motion and moving arms as the light in his head blinks. Adjustable arms and legs - put him in the position you want. There are two color variations: a darker blue version with blue feet and a lighter blue with yellow feet or red feet. Robot dimensions: 70 x 100 x 245 mm.
Source: internet, My Collection - Updated 04-14-2013