Know Yourself Better: Using Bio-electrical Impedance Analysis (BIA) technology, the weight scale provides accurate data for 13 health indicators including Weight, BMI, Body Fat, Visceral Fat, Muscle Mass, Bone Mass, Body Water, and more! Help you to know yourself better. Sync with Fitness App: Download Fitdays from APP Store or Google Play, record all your changes in the App, clear changing curve helps you keep up with your improving easily. Sync data with Apple Health, Google Fit, Fit-bit & Samsung Health, store all your data in one convenient, centralized location for viewing trends and tracking progress. Accurate Measurement: 4 high precision G-sensors make Healthkeep body scales have higher precision and sensitivities. Weighing range is from 0.2 to 180 kilograms in 0.05kg increments. Even a cup of water can be detected. Become a better self from a cup of water. Besides, you could also enjoy step-on technology and auto-calibration for fast and accurate weight readings. One Scale for Familly: Healthkeep wireless scale allows you to create up to 24 member profiles to seamlessly track multiple users, so you and your family could share one scale, add your family members' profile and get the data displayed on the app at a glance. It's convenient for every member to know their body metrics better and knows specifically what to work on. Especially helpful for bodybuilders and those working on weight loss. The 6mm tempered glass makes the scale more comfortable and safe to stand on, large LCD display makes it clear to see the numbers. Easily change weight units through the unit button at the back of scale (lb/kg/st). 2*AAA batteries included. Integrated body, simple design, and rounded edge give you pleasant and safe experiences.