Withings has had a bunch of smart body weight scales in the past. Body Cardio is the latest one that pairs to smartphones to help users keep an eye on their weight. More importantly, it displays standing heart rate plus Plus Wave Velocity, which gives insight into your cardio health.
Body Cardio also shows your weight, BMI, body fat, water %, muscle mass, and bone mass. The companion app lets you know how well you are doing and provides tips to improve your cardio health.
Body Cardio has a solid aluminum base and no feet to adjust. That means you can use it on any surface. The device offers WiFi and Bluetooth connectivity. The battery lasts up to 12 months. You can get one of these for $179.95.[Source]