"From Get Fit, these smart Bathroom Scales sync with your iOS or Android smartphone via Bluetooth, helping you keep your measurements in one place. Download the Fitday or Onfit app from the App Store or Google Play Store to view your data in a clear, visual format and build a more complete picture of your body composition over time. Using Bioelectrical Impedance Analysis (BIA) technology, the scale monitors 13 body composition metrics, including body weight, BMI, body fat percentage, body hydration, skeletal muscle, muscle mass, bone mass, protein, basal metabolism, metabolic age, subcutaneous fat, visceral fat, and fat-free body weight. Designed for shared use, the app supports unlimited user accounts with up to 24 profiles each, plus guest mode for non-recorded weigh-ins and baby mode for monitoring a baby’s weight. Weigh without your phone to hand, then sync your results to the app the next time you connect. Key features Bluetooth connection for syncing to Fitday or Onfit app Tracks 13 body composition metrics using BIA technology Choice of 3 measurement units: st / kg / lb Maximum capacity 180kg/400lb High-visibility backlight LCD digital display High precision sensor with auto-calibration for accuracy (±0.1g/0.2lb) Auto on/off function Powered by 2 x 1.5V AAA batteries (included) Sizing 28 cm x 28 cm Please note: Colours shown are as accurate as possible, though may vary slightly depending on your screen settings."