Smart App SyncOur OKOK International Health app works with Bluetooth 4.0 and above on iOS 8.0 and Android 6.0 (syncs data with Fitbit, Google Fit with Fitbit and Apple Health). It can be used 8 users simultaneously and each one can be identified automatically and all the data will be stored on the app for your families to view at any time. . High Quality FeaturesThe Bluetooth scale is designed in a fashionable style and is light and convenient with its small weight. The maximum capacity can reach 180 kg / 396 lb (accurate value: 10g). Weigh Scale is equipped with a backlit LCD display that allows you to read the data from any angle. The ultra-strong 6mm tempered glass platform allows you to clean it easily. Four non-slip silicone pads on the bottom. . High AccuracyThe scale applies high-precision BIA fat measurement chip and 4 high-precision pressure sensors to ensure the data is accurate and reliable. Convenient unit conversion can meet your various needs. . 12 essential measurements including weight, BMI, body fat, body weight without fat, subcutaneous fat, visceral fat, body water, skeletal muscle, mass muscle, bone mass, protein and metabolic age. Weigh anytime WITHOUT a phone, data will sync instantly with the app once connected. . Energy savingIt has a low battery indicating and an automatic shutdown function. After a few seconds of inactivity, it automatically turns off, which is useful for maintaining battery power and efficiency. USB charging is supported (a USB cable is included with the scale) It can be used for three months after fully charged. .