Meet the Skulpt: a smart device that measures your body fat and muscle quality. It provides you with detailed feedback about your muscle quality, measuring up to 24 different muscles. Skulpt is pretty easy to use. Just select the muscle you want to measure, spray the sensors with water and place them on your body, and you are ready to see results on your phone or smartwatch.
The device provides you with enough info about your workouts to help you optimize your training routine. The companion app runs on iOS and Android devices. The battery lasts for up to 4 weeks. More info is available here.