Concept personal blender, 600 ml, rechargeable Li-Ion, black, FitMaker SM4001FitMaker Personal Smoothie Blender Black 0. 6L The Concept SM4001 Smoothie FitMaker is designed for anyone with an active lifestyle who wants to easily and quickly prepare healthy smoothies anytime, anywhere. It has an integrated Li Ion rechargeable battery, so you are not dependent on the presence of an outlet. Thanks to its compact and lightweight design, it conveniently fits into a backpack or purse, so you can take it with you anywhere on a trip,