Measures body fat percentage through bioelectrical impedance analysis (BIA) and also measures body mass index (BMI). Both are displayed on the large digital panel. Clinically accurate measurements in two modes: Normal Mode for any adult or child over age 10 at least 40" tall; Athlete Mode for adults involved in intense aerobic exercise. Retains 9 personal profiles in memory. U.S. and metric systems. Includes 2 AAA batteries and instruction manual.