Body Weight Scales features: Wireless Smart Digital Bathroom Body Fat Scale 180KG Bluetooth Scales Weight BMI Specification Material: Toughened Glass Size: 275x275x20mm Wireless Mode: Bluetooth 4.0 Capacity: 0.2~180KG (0.4~400lb) Power Source: Built-in 150mAh Battery Charging Time: 1 Hours Packing list: 1*Bluetooth electronic scale 1*Instruction manual Noted: -Please keep the digital body weight bathroom scale away form wet floor, Don't use the scale lf the glass is wet in case of slip. -The body fat smart scale measurements should only be used for references. For medical purposes, please consult a medical professional. -Body fat percentage measurements are intended for users between 10 and 80 years old. 1.The fitness app syncs with Google Fit, Apple Health & Fitbit App. 2.Smart weight digital scales measures BMI, Body Fat, Water, Muscle, Body Mass, Metabolism, Weight, Visceral Fat, Protein, Obesity Degree, Body Age, Weight W/O Fat. 3.Auto calibration & highly-sensitive sensors in increments of 0.05kg (0.2lb) with 28st/180kg/400lb. 4 sensitive sensors, 6mm tempered glass platform, modern and sleek design with classic black colour. 4.Bluetooth body fat scale allows you and your family to share one scale. Keeps all data separate for each member of the family. 5.Connects to Google, Apple & Fitbit App, Saves and tracks your data enabling you to track your daily, weekly, and monthly progress, download the app in apple/google play, the app works with Bluetooth 4.0 and above, IOS 7.0 and above and Android 4.3 and above