SYNC WITH APP: Setup App works with Android, iOS, Google Fit, Apple Health, Samsung Health. Save historical data by tracking each day, week, month or year progress. MEASUREMENTS: 13 different essential measurements with the APP besides weight including BMI, Bone Mass, Body Fat, Visceral Fat, Body Water Muscle Mass, BMR and more. WEIGHT OPTIONS: You can also weight without using the App, by just getting the number. All data will be uploaded to you App whenever you open the App and measuring again PRECISION: High precision sensors & Bluetooth Connectivity. BIA Technology, for consistent and accurate measurements results TRACK YOUR PROGESS: Allows you to track as many users as you want, through multiple accounts or profiles. You can share your progress and goals with anyone. Includes Batteries; 2 X 1.5VV AAA.