My sweet husband gave me the Hamilton Beach Blender 52655 with the wave action.  This is absolutely the worst kitchen applicance I have ever owned.  I only used it 3 times before it broke around the seal at the bottom and leaked out all over the counter.  I threw the pitcher out already.  The model I was given had a food processor attachment also.   I have to wear earplugs while running it just to be able to stand the noise.  Please please do not waste your money on this applicance.