• Comprehensive body data test: explore the subtle differences in your body with our tests that include weight, BMI, body fat, muscle mass, body water, visceral fat, bone mass, metabolism, proteins, degree of obesity, body age, and fat-free weight. • Convenient Bluetooth connection: ensure your phone supports Bluetooth 4.0 and has iOS 7.0 / Android 4.0 or a later version installed. The scale easily connects to smartphones or tablets. • High precision measurement: advanced technology for accuracy up to 0.05 kilograms. Design with R10 rounded corners that are shockproof, non-slip, and anti-tip. • Easy to use: download the "OKOK" app, open the Bluetooth connection, calibrate the scale, and step back on it to complete the measurement. • Design for the whole family: unlimited user profiles for family and friends.