Tech News Desk-In most smart bands and smart watches, you may have noticed that there is a green light that is flashing continuously. There is a lot of misunderstanding among people about why this green light is there and what is its function. Philosophy makes people think that it is created or kept only to attract people. However, it is completely wrong for people to think so because this simple looking green light is a must for every smart band and smart watch as it activates the feature associated with your help. If you do not know about it yet, then today we will tell you in detail about it because maybe you have seen a smart watch in the hand of a friend or maybe you are using it then you will get this feature. , should be aware of.
Blood is red because it reflects red light and absorbs green light. The smartwatch uses green LED lights attached to a light-sensitive photodiode to track the amount of blood flowing through your wrist at any given time. When your heart beats, there is more blood flow to your wrists and more absorption of green light. By flashing LED lights hundreds of times per second, the smartwatch can count the number of heartbeats per minute. Green lights are less sensitive to ambient light. This means that this green light will not affect the surrounding light as much as the others and therefore this light can produce more accurate results while performing pulse sensing.