Wyze Scale, Bluetooth Body Fat Scale and Smart Body Composition Scale, Smart BMI Scale, Heart Rate Tracking, Body Fat Percentage Tracker, Analyze with Smartphone App, Black ( brand new in box ) Complete Body Composition Analysis - Wyze Scale measures your weight (of course), body fat %, lean body mass, and 9 additional body composition metrics for a total of 12 essential metrics. Tracks Your Heart Rate - Most “smart scales” stop at weight and body fat % and don’t even think about telling you something about your heart. Wyze Scale tracks your heart rate, so you can know just how intense that last workout was. See Trends in the Wyze App - Track your progress for weight and body fat right inside of the Wyze app. You can see your trends over time and make real progress. Wyze Scale also syncs with other popular fitness apps such as Apple Health and Google Fit. Recognize up to 8 Users - Real smart scales are smart enough to know who stepped on them. Wyze Scale auto-recognizes up to 8 users and with “guest mode” it can be shared with an unlimited number of family and friends. Full-Surface Sensor Glass - Wyze Scale turns on when you step on and has a coated sensor glass that lets you step wherever you want. That means no annoying, “tap, wait, calibrate” then step on.