Product overview: Size: 26 x26 x2.2cm Measuring accuracy: 0.1KG Weighing range: 0.2-180 KG Maximum capacity: 180KG/400lbs Step-on and Auto-calibrated Technology Screen that displays the numbers in LED Unit Modes: KG/LB/ST Overload and low battery indicator Battery powered: 3 AAA batteries (Included) Equipped with high precision strain gauge sensor system Compatibility: Compatible with IOS 7.0 / Android 4.3 devices and above models Recent 8 users for family mode: The impedancemeter scale supports simultaneously adding 8 users, who can track the physical condition of you and your family at any time, and it supports automatic user identification High technology and high precision : Using bioelectrical impedance analysis (BIA) technology, featuring 4 high-precision sensors and 4 high-sensitivity electrodes, which gives you very consistent and reliable measurements 13 essential measurements: The use of biotechnology -impedance allows you to measure 13 physical data: weight, BMI, water, metabolic age, basic metabolism, fat mass, abdominal fat mass, muscle mass, skeletal muscles, bone mass and protein content Super APP: No fear of loss or of data theft thanks to an independent secure cloud platform, the free multi-user OKOK application (available in App Store and Google Play), allows 8 members of the family to share their digital scale, it also synchronizes with Apple Health applications , Google Fit and Fitbit, keeping you and your family healthy