Feature: 1. Shock Resistant: The back is a full covered base, with even force, which effectively protects the body, ultra high configuration, safer, strong and shock resistant, and prolongs life. 2. Accurate Measurement: Real time transmission of weight data, accurate measurement of various data, reflecting the physical condition, and providing unlimited motivation for weight loss. 3. Bluetooth Synchronization: Using Bluetooth sensorless synchronization, when you start the APP, the data will be automatically transmitted and synchronized to the cloud for calculation and suggestions for improvement are given. 4. Multiple Users: 8 Users can be added to a mobile phone, and different users can be automatically identified, and health data can be learned even without family members. 5. Strong Stability: 6mm Stalinite, 35° round corner design, 3‑180kg weighing range, greatly improving impact strength, bending strength, strong stability and other properties. Specification: Item Type: Smart Weighing Scale Material: Stalinite, ITO Product Size: Approx. 30 x 26cm / 11.81 x 10.24in Weighing Range: Approx. 3 ~ 180kg / 6.6 ~ 396.8lb Power Supply Mode: 4 x AAA batteries (Not Included) Function: It can measure muscle rate, water, visceral fat, bone mass, fat rate, BMI, body age, obesity, body score, fat mass, basal metabolic rate, weight value, protein, water content, obesity, muscle mass, Lean body weight 17 body data How To Use: 1. Battery installation (not included) : The new scale needs to install batteries for the first time, and pay attention to the battery placement in the ± direction 2. Mobile APP installation: A. Turn on Bluetooth on your phone B. Mobile phone connection (Wifi, 3G or 4G is recommended) C. Download and install the APP or search the APP name "OKOK" to download the APP. 3. Bind devices, register and improve your information. 4. Data Measurement: A. When weighing, to avoid affecting the accuracy of weighing, please place the scale on hard level surfaces and do not place the product on carpet or soft ground. And make sure there is no foreign matter in the bottom before weighing. B. During the measurement, please step on the scale barefoot and contact the sensing metal sheet area well. As the amount of fat needs to be calculated, do not leave the scale if the measurement time is more than 5 seconds. 5. View the measurement results.. Package List: 1 x Smart Weighing Scale