Xiaomi has released two new devices in China, one of them is a fitness band called the Mi Band Plus (or Mi Band 1S) and the second one is the Mi Power bank.

What’s different about Xiaomi’s new fitness tracker? Well, it comes with a heart rate sensor, which was not present in the previous edition of Xiaomi’s fitness tracker, the Mi Band.

Let’s talk a little more about the heart rate sensor. Firstly, it is based on an optical heart monitoring technology which tracks the blood by illuminating the [...]