The reasons for the inaccurate calorie calculation are as follows:
1. The watch is not worn correctly. The heart rate sensing area on the back of the device does not fit the wrist skin, and data cannot be obtained;
2. The heart rate sensing area on the back of the watch is dirty, or there is sweat between the wrist and the device, which will affect the measurement results;
3. The wrist is not kept still during the measurement and the arm is shaken;
4. Being in a low temperature environment, or the wrist skin temperature is too low, or causes blood flow to decrease, which affects the measurement results;
5. The wrist wearing the watch is in a state of compression, which affects blood circulation and also causes the measurement results to be inaccurate;
6. Tattoos or pigmentation on the wrist will affect the penetration of red light from the sensor, resulting in inaccurate measurement results.