Amazfit Bip U Pro, User Manual

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you immediately after positioning is successful. GPS positioning is
automatically disabled after you finish working out.
Use GPS positioning in an open outdoor space, and wait until positioning is
successful before you begin working out. If you are in a crowd, raise your arm
to your chest to accelerate positioning.
AGPS provides GPS satellite orbit data to help the watch accelerate GPS
positioning. Keep the watch connected to the phone's Bluetooth. Each time
you connect the watch to the Zepp app, the system automatically checks for
and completes updates. The watch periodically synchronizes data from the
Zepp app. Otherwise, AGPS data expires, which affects the speed and
accuracy of positioning. In this case, the watch prompts you to connect to the
Zepp app to update AGPS for accelerated positioning when you begin
working out.
Heart rate range for workout
When you are working out, the watch calculates your heart rate range based
on your personal information. You can determine the effect and intensity of
workout based on the heart rate range. On the watch, you can view your
current heart rate range in the heart rate data column. After you finish working
out, you can open the Zepp app and find the current workout history to view
the workout duration in each heart rate range on the Details screen.
By default, six heart rate ranges are provided.