M4 Smart Band Health Sports Fitness Activity Tracker Heart Rate and Blood Pressure Fitness Bracelet Smart Watch with Step Calorie Counter for Android iOS

1.Made of thermoplastic elastomer, it is more comfortable to wear, double-breasted design, let you exercise without falling off. 2.Recording hearrt rate is nice for knowing your health and exercise status, using reflection. Photoelectric signal detection principle records your heart rate, 24h continuous detection your heart rate. 3.Automatically record the number of step, burn calories. 4.You can choose the exercise program that suits your life rhythm, Nothing is more than sweating after exercise. Sweating can relax yourself, stick to exercise, and make yourself a nicer self. 5.The bracelet automatically detects your sleep and generates a sleep report. 6.When you forget the time, the bracelet will vibrate gently, remid you to get up and wake up.