OMRON Body Composition Monitor and Scale.Full body sensing is more accurate than measuring with feet alone. With this Body Composition Monitor and Scale, youll get a comprehensive understanding of your body composition to help you reach your fitness goals. The HBF-514C Body Composition Monitor measures seven fitness indicators including body fat percentage, body mass index (BMI), skeletal muscle, resting metabolism, visceral fat, body age and body weight. This OMRON body composition monitor includes a four person memory profile for the whole family and 90 days of memory to keep a 3 month record of your progress. The HBF-514C is also suitable for adults up to 330 pounds and 6.5 feet tall.Note: This monitor cannot be used with a pacemaker or other implanted devices. Consult with the manufacturer of the implanted device and your physician prior to using this monitor.NOTE: Unit operates on 4 AA batteries (included).