A Wi-Fi scale that uses patented Position Keep an eye on technology to deliver probably the most accurate body composition readings (weight, body fat and water percentage, muscle mass and bone mass). It Mechanically synchronizes along with your smartphone to display trends and allow you to reach your weight goals. – Full body composition – Track weight, BMI, total body fat and water percentage plus bone and muscle mass – Absolute best-in-class accuracy – Get high-accuracy measurements by means of Position ControlTM technology, a patented body position detector – Automatic synchronization – Mechanically uploads measurements over Wi-Fi or in an instant to a Bluetooth-enabled smartphone – Nutrition tracking – Set a weight goal and manage your day-to-day calorie budget with integrated nutrition tracking – Multi-user – Recognizes and records data from as much as 8 different users with independent sync. Includes: 4xAAA Batteries. Black.