Withings Body - Digital Wi-Fi Smart Scale with Automatic Smartphone App Sync, BMI, Multi-User Friendly, with Pregnancy Tracker & Baby Mode #1 WORLDWIDE - WITHINGS IS THE INVENTOR OF THE SMART SCALE 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 0.1 kg / 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 18 months using four standard AAA batteries (included). "ALEXA, ASK WITHINGS" - Now your voice can help you manage your weight with an Alexa Skill that works with Health Mate.