Though it might look like an average weight measuring scale, the Inner Body Composition Monitor does that and more like calculating  total body water percentage, muscle mass, recommended daily caloric intake, metabolic age, bone mass, and more.

This slick device even calculates body fat: distinguishing between body fat and lean body mass or if you so desire  your muscle mass: tells you how much of your weight in lean body tissue.

Pretty Cool. Can really tell you if your bones weigh more or the meat ;P

It's available for US $120 from here.