Features: - weight, bmi, body fat percentage, body water percentage, visceral fat, body age, muscle mass, bone mass, protein, fat-free body weight, obesity levels, and basal metabolism are all factors to consider. Once paired, these data will sync to the okok international app. With a simple trends graph at your fingertips, you can easily monitor your progress and stay inspired during your fitness journey - from google play or the app store, get the okok international app. The bmi smart scale works with any smartphone (android 4.3+, ios 7.0+) and connects to the app via bluetooth 4.0+ - the smart bluetooth scale uses 2 AAA Batteries - 4 highly high-precision electric sensors, 6mm top-quality tempered glass weights ranging from 0.4 pounds (0.2kg) to 400 pounds are measured on a smart scale (180kg). Auto calibration and high precision to 0.1lb/50g. Day or night, the lcd high-definition screen is easy to read. Weight scale with a sleek design