Features Made for wrists smaller than 6 3/4 in ECG-accurate heart rate without a chest strap Personalized percent of maximum heart rate display Full calorie management system tracks calories consumed against a daily target Tracks calories burned during exercise Updated case design featuring MIO™'s famous interchangeable straps Full featured watch with time, date, alarm, back light, stopwatch, water-resistant to 10 m Bonus MioSense Guide to Healthy Living with complete list calorie and carbohydrate tables