A：
1. Is Bluetooth connected normally?
2, the synchronization data needs to be in the home page drop-down page or refresh the data to start
3. Is the Bluetooth connection disconnected due to timeout?

Precautions:
1. It is forbidden to use an adapter with a charging voltage higher than 5V and a charging current greater than 2A. The charging time is about 90 minutes.
2. It is forbidden to charge in the case of water stains;
3. When measuring heart rate/blood pressure, the heart rate sensor should be close to the skin and well contacted. If the sensor is not tightly exposed, the measured value will be inaccurate;
4. The smart bracelet is an electronic monitoring product, not for medical reference, the data is for reference only;
5, photoelectric sensors are highly sensitive components, be careful of hard objects. Wear it for a period of time, there may be sweat and dust, and it can be cleaned regularly with a soft cloth.

About N+1
N+1 Smart Watch Company is a professional smart bracelet manufacturer, who supports OEM/ODM orders, has got nearly ten years of export experience, we've got hundreds of private models in the field of smart bracelets, sports bracelets, and Bluetooth watches;

The products are mainly exported to European and American markets;

Our products are rich in styles, such as smart watches, Bluetooth call watches,  SIM card call watches, Women's exclusive smart bracelets, outdoor climbing watches, etc., all of them support OEM/ODM orders ;

In the field of health monitoring, our smart watches have powerful functions, such as body temperature monitoring, blood pressure monitoring, blood oxygen detection, ECG detection, sleep monitoring, etc.;

In the field of sports monitoring, our smart watch is your best sports companion. It has got outdoor sports watches, waterproof functions, step counting & distance & calories, GPS motion motion track , and special sports functions such as air pressure, altitude, SOS call, etc. ；

There are also exquisite bracelets specially designed for women, with women's menstrual period reminder function;

According to the quality needs of different customers, we have silicone straps, steel straps and Milanese straps for your option; There are also click screentouch, full circle / square screentouch, square screentouch, racket screentouch options on the watch dial display;