Introduction of the 4-channel heart rate detection on the Redmi Watch 4
The channel corresponds to the total number of optical paths. Xiaomi Smart Band 8 Pro and Redmi Watch 4 have the same optical path design. However, because the Xiaomi Smart Band 8 Pro was released earlier, the algorithm matches the 2-channel optical path capability. With in-depth research and optimization, the Redmi Watch 4 has been upgraded to support a 4-channel optical path.
Does it help?
Yes
No