Withings Body – Wi-Fi Smart Scale Tracks BMI, Digital Weight Bathroom Scale, App Sync Via Bluetooth or Wi-Fi. ADVANCED WEIGHT MONITORING – See progress during each weigh-in with the weight trend screen to help you see the big picture, plus BMI to know if you are on the right track. MULTI-USER FRIENDLY – Up to 8 users can weigh themselves and access their personal weight histories, as the scale automatically recognizes who’s who. FOR EVERY STAGE OF LIFE – Keep track of the whole family’s growth with Pregnancy Tracker (healthy weight gain range and obstetrician-reviewed advice) and Baby Mode, to track the youngest members. PATENTED POSITIONING AID TECHNOLOGY – Exclusive Position Control Technology guides you into the correct stance so that each weigh-in is precise up to 0.1kg / 0.2 lbs. AUTOMATIC DATA SYNC – Data from every weigh-in appears automatically via Wi-Fi or Bluetooth in the Health Mate app. HIGHLY COMPATIBLE – This smart scale syncs with Apple Watch plus more than 100 top health and fitness apps including Apple Health, Fitbit and Google Fit. LONG LASTING BATTERY – Body will operate for up to 2 years using four standard AAA batteries (included).