The Iris family consists of 3 models: the Iris 2, a simple operation mixer; the Iris 2 Evolution, a high-performance mixer; and the Iris 2 Advanced, a sophisticated mixer that can program and perform multiple functions. Although there are differences in their control systems, all 3 models share the same solid and reliable engine-pump-chassis structure. The electronic controls in the Evolution and Advanced allow the user to design and store programs. 2-year warranty.Dimensions: 13-3/4"H x 6"W x 8"DVacuum Mixers