What is the Color Band A1 application, how does it work?

According to the introduction of Huawei Internet Service, Color Band A1 is a Health & Fitness app on the Android platform. There is currently a 1.3.7.128 version released on May 13, 2019, you can see the details below.

Color Band A1, your personal health assistant, tracking your exercise and sleep status daily.

The app can only use together with Color Band A1, Here are the function list:
1) Record exercise steps, calculate the calorie and distance daily;
2) Record sleeping duration, and identify deep sleep, light sleep and awake period;
3) Figure out the history data as daily, weekly and monthly;
4) Set a goal and encourage yourself to complete your daily exercise and sleep target;
5) Accurately testing ultraviolet intensity in the air, give you related advice for skin caring;
6) Remind you with incoming call and new messages;

Notes: Support android 4.4 or later version.