• The H803 heart rate armband collects the necessary data through the photodiode and calculates the heart rate. With the dual-beam array, you can obtain more accurate detection data and more effectively record real-time heart rate changes.
• As the exercise heart rate reaches the maximum preset warning value, the armband vibrates to remind you, a more direct method compared to the LED light warning. 
• Adopting Lycra elastic mesh and Velcro strap, the armband is comfortable to use, skin-friendly, with an adjustable range of 19cm-31cm (for weight range 40kg-120kg), suitable for multiple types of exercise.
• Continuous endurance of 45 hours, meeting the requirement for long-distance training or racing.
• Supports connection with standard ANT+ and Bluetooth protocols.
• Compatible with a variety of sports equipment and sports apps.

Band cleaning.

Rinse the strap under running water after each use and hang it to dry. Washing the strap in a washing machine or dryer is strictly prohibited.