Smart Sync App: Get Fit smart body weight scales provide everything you require from a device in our digital era. This smart scale tracks your measurements on your smartphone devices. Sync your iPhone or Android device via Bluetooth to gain a comprehensive understanding of your body composition and well-being. View 13 body composition analyses within the app. Simply download the user-friendly and visually appealing Fitday or Onfit application on the App Store or Google Play Store. The app allows for unlimited user account, giving every family member health information so they can set goals and track progress. 13 Essential Body Composition Metrics: The best smart scales are designed to help you stay on track, whether you want to achieve fitness goals or gain insight into your body. Get Fit uses Bioelectrical Impedance Analysis (BIA) technology to monitor 13 important body data: Body Weight, BMI, Body Fat Percentage, Body Hydration, Skeletal Muscle, Fat-free Body Weight, Muscle Mass, Bone Mass, Protein, Basal Metabolism, Metabolic Age, Subcutaneous Fat, and Visceral Fat. A Highly Accurate Digital Scale: Equipped with high precision sensor and auto-calibration, the Get Fit scales ensure remarkable accuracy (±0.1g/0.2lb), powered by 2 pcs 1.5V AAA batteries. Choose from 3 measurement units: st/kg/ lb with a maximum capacity of 180kg/400lb. The high-quality hard glass plate, 28x28 cm, and high-visibility backlight LCD digital display is ideal for daytime and night time use. Smart Auto-connection: Get Fit knows that you do not always carry your phone, and so their Bluetooth scale is more powerful, intelligent, and convenient with a Bluetooth connection. There is no need to carry your phone when weighing, since the Get Fit body weight scale can upload your data to your phone. That means the next time you open your Fitday or Onfit App, your composition data will sync to the app once it is connected. It works anytime, even if you don’t have your phone to hand.