Perfectly work with Bluetooth smart phone & pad, App is easy to use, and can be downloaded for free from the Apple Store or Google Play Creating an unlimited number of accounts for relatives and friends ,the app can be recorded unlimited users data ,Syncs with Apple Health & Google Fit through our App .You Sharing your body composition analyses via Twitter,Facebook, Instagram . With 12 Key index including Weight, BMI, Fat%, Muscle%, V-fat%, Bone Mass, Water%, BMR, Obesity%, Protein%, Lean Body Mass, Body Age Beautiful Red LED Display, Large 28*28cm platform and 180kg capacity Step on Technology, quick connect to smart device