Before you step into the gym and pay an expensive fitness trainer, take some steps at home to keep an eye on your health. This Body Fat Analyzer measures body fat weight and percentage in seconds, with clinically proven accuracy. No more testing at the gym or the doctor's. It's ideal for the serious athlete, weight conscious or anyone concerned about fitness. It also offers an additional body mass index reading and saves up to nine personal profiles, so you can keep tabs on the entire family. See the digital read out in only 7 seconds. Requires 2 AA batteries for operation.