1. When you don't wear the bracelet or wear it loosely, the bracelet and the wrist can't fit well, and the pulse signal of the wrist can't be recognized. Please make sure to wear it correctly, and the bracelet fits comfortably with the wrist skin (wear it slightly tightly). Don't wear it on your wrist.
2. Make sure the glass on the back of the bracelet is clean, dry and free of foreign objects. Excessive sweating during exercise causes the bracelet to slip, and sweat blocks the light path, which may lead to inaccurate heart rate measurement. Please dry your sweat and put it on.
3. Please ensure that the measured arm position is free of scars, tattoos and excessive hair coverage, which may lead to poor contact between the heart rate test unit and the skin.
4. When the temperature is low (for example, below 10 degree), the blood flow of human wrist becomes low, which may lead to inaccurate heart rate measurement.
5. Exercise regularly (such as running, walking and cycling). ) it is easier to measure heart rate; Irregular sports (such as playing ball, free activities, etc.). ) and wrist strength exercises (such as weightlifting) may not be able to accurately measure heart rate. Please enter the corresponding sport type according to the single sport menu corresponding to the product.
6. During exercise, if you find that the heart rate monitoring data of the bracelet is abnormal, please keep the front of the bracelet facing the face and stand still for 10- 15 seconds, and the heart rate data will return to normal.