The TomTom Touch Cardio + Body Composition helps wearers calculate their body fat and muscle mass composition. The wearable sends a harmless current through the body, measuring resistance and producing a report. It can help users understand how much of their exercise, eating and hydration habits are affecting their health. The device also functions as a fitness tracker, monitoring heart rate, activity and sleep quality. Sports mode caters to custom workouts for a range of activities, letting users track their long-term progress. Information is all synced via the TomTom Sports app to any iOS or Android smartphone.