Ends 10/13. Amazon with Wyze Labs has the Wyze Smart Scale (Black) for $29 with free shipping. Get a $10 Amazon credit to spend on Prime Day (10/13 & 10/14) with purchase (Small Business Promo). The Wyze Scale measures and tracks body fat, lean body mass, heart rate and 8 other metrics, and works with many popular fitness apps.

The Wyze Band Activity Tracker w/ Alexa is $30 w/ the $10 Small Business shopping credit (but you can only get the credit once).