If you're looking to lose weight and want to keep track of your progress along the way, this device, which measures body fat, offers a quick and simple solution. Instead of using clamps (which require more time to set up), this high-tech tool measures body fat by emitting a beam of infrared light. Because muscle absorbs light and fat reflects it, the monitor records the amount of light reflected back, quickly calculates the percentage of fat in the specific body part, and instantly displays the result on an LCD screen. Programmable by age, height, weight and gender, the monitor compares your results to the standard minimum/maximum range of body fat for others matching the same description - a feature that's not usually available with other monitors. With its memory, it also recalls your previous reading so you can monitor your progress - an easier way to keep track of your results without having to write them down every time. Lightweight, it operates on one 9-volt battery (included) and comes in a padded case for storing or traveling.