Body Weight Scales features: eufy by Anker, Smart Scale with Bluetooth, Body Fat Scale, Wireless Digital Bathroom Scale, 12 Measurements, Weight/Body Fat/BMI, Fitness Body Composition Analysis, Black/White, lbs/kg/st Total Compatibility Smart Scale supports multiple device pairings, eliminating the need to connect and disconnect when changing users. For ultimate convenience, EufyLife syncs with Apple Health and Google Fit to store all your data in one convenient, centralized location for easy viewing. Note : Only your weight is displayed on the scale. For all other measurements, check the EufyLife app. Family-Friendly Pairs with up to 20 accounts to seamlessly track multiple users—just log-on and weigh-in. Note: 1.Stand with your feet to the left and right of the metallic circle. Do not stand on the center of the scale. 2.Do not use this device if you are pregnant. 3.Not intended for use by professional athletes. 4.Body fat measurements intended for users above 13 years-old. 5.Measurements should be used for reference only. For medical purposes, consult a professional.