Which brand of smart bracelet is better, and what are their advantages and disadvantages?

The heart starts to wear a smart bracelet. This smart bracelet can monitor the heart rate and sleep quality, which is quite good. When I was pregnant for more than 7 months, my husband gave it to me as a gift. I heard there are two kinds: red and white. He chose festive red, which is also my favorite color. I didn't know how to use it at first, but it was very convenient to use it after slowly groping. This brand of smart bracelet is ok. Through the synchronization between the bracelet and the mobile phone, you can see my sleep time, waking time, deep sleep, shallow sleep, overall sleep quality and other information. When detecting the heart rate, you can also automatically detect the hour, or you can manually press the button to detect the heart rate at any time. I'm three months pregnant. I was worried about poor sleep quality before. I feel much safer after using the smart bracelet. I hope I can help you.