?STRONG GUARANTEE? - 2-year warranty,we cherish every customer, their satisfaction takes priority. Feel free to contact us, we will take every consultation and question seriously. ?Work with fitness apps? - Download "Fitdays" App through apple store or google play, sync with APPLE Health, GOOGLE Fit, Samsung Health, Fitbit, support Apple and Android users. ?User-friendly APP? - Simple and aesthetic APP, convenient for you to view body data at any time and understand body composition in detail. Clear trend chart, more intuitive presentation of body changes. Support 24 users to use together and share a body fat scale with family and friends. ?High quality body scale? - 4 High precision sensors to accurately measure your body composition. Super stable Bluetooth connection APP, instantly synchronize data to APP, quick and easy to use. High strength large tempered glass panel bear 400lbs, bottom silicone pad is non-slip. ?13 Measurements? - Using BIA technology, it measures 13 essential body composition data, helps to gain a deeper understanding of body composition indicators, including Weight, BMI, Body fat rate, Visceral fat, Body water, Skeletal muscle rate, Muscle mass, Bone mass, Protein, BMR, Body age, Fat-free weight, Subcutaneous fat, sync data to APP to keep track of body measurements.