Features:

Bluetooth 5.1 stable connection, GPS five-star accurate positioning.
5TM waterproof rating
21-day battery life
Manage your health easily 24 hours a day
ZEPP OS operating system allows for one-click measurement of 4 health indicators.
More than 150 built-in sports modes
1.39-inch ultra-high definition color screen
HD high-definition AMOLED display