You can get this Roomie Sophie smart scale on sale for $27.99 right now (reg. $79). It works with four high-precision sensors to give you 11 metrics to help analyze your health, including your weight, body fat, visceral fat, and muscle mass. It has built-in memory to store your stats, auto-on and auto-off, as well as automatic calibration to keep your data as accurate as possible. It also comes with a free app (available to iOS 8.0 and up, and Android 4.3 and up) and is compatible with Fitbit, Apple Health, Google Fit, and more. The smart scale's maximum weight is 330lbs.
You can get this Roomie Sophie smart scale on sale for $27.99 right now (reg. $79), though prices can change at any time.