A Wi-Fi scale that uses patented Position Control technology to deliver the most accurate body composition readings (weight, body fat and water percentage, muscle mass and bone mass). It automatically synchronizes with your smartphone to display trends and help you reach your weight goals. - Full body composition - Track weight, BMI, total body fat and water percentage plus bone and muscle mass - Best-in-class accuracy - Get high-accuracy measurements via Position ControlTM technology, a patented body position detector - Automatic synchronization - Automatically uploads measurements over Wi-Fi or directly to a Bluetooth-enabled smartphone - Nutrition tracking - Set a weight goal and manage your daily calorie budget with integrated nutrition tracking - Multi-user - Recognizes and records data from up to 8 different users with independent sync. Includes: 4xAAA Batteries. Black.