That little Haier appears to work very similiar, and have similar mechanicals to my little Whirlpool "portable" washer. Agitation appears to come from reversing the electric motor. The thing I noticed about the Haier versus the Whirlpool is the size and duration of the strokes. The Whirlpool's strokes are about 1/2 second, and about 270 degrees. the Haier appears to make at least 2-3 full rotations of the agitator at 1 second intervals.
Not to knock the little guy, but I know Haier is a Chinese company, and they are known for copying American designs. I imagine the speed and frequency of the agitation were changed in the Haier do avoid a patent infrengement on Whirlpool's design!