Mechanical arm

I want some one to design a small mechanical system that has following specification i)size may be more or less 1 feet. ii)can deliver power so that it can push more or less 1 kg weight. iii) speed of the movement can be adjusted at least in 2 or 3 types. iv) mimics the movement of the shoulder , wrist and elbow of a human arm. v)Finger movement is not required however be able to grasp different objects.