Zeblaze VIBE3 HR IP67 Heart Rate Monitor Sports SmartwatchKey Features :During exercise, check your real-time heart rate to learn about your progress. No matter what your goals are, it can always provide you a guide to know when to strive and when to relax.By using inbuilt 3D accelerometer, track your current speed and distance, allowing you to look up speed and distance even in indoors motion (such as treadmill running ).Hard shell, stand up to the toughest environments.Calories calculation is based on heart rate and physical information. You can look up not only real-time heat consumption (in unit of Kcal) in training, but also the total heat consumption per training after training.Conducts calories calculation in sport based on weight, height, age, gender, heart rate in training, maximum heart rate (HRmax), motion strength in training.Backed by an international standard rating of IP67, VIBE 3 HR wrist watch has waterproof performance high up to 50-meter/164 ft, hence, no water, dust