GLOBALSAT GB-580 Quick Start - Manual (Page 7)

b. Bike setting (GB-580P only)
1. Please press Page button 2s to enter
Main MENU and then chose
ACCESSORIES.
2. To press UP and Down button to select
BIKE SETTING.
3. There are five bicycles for configuration.
Press ESC button to exit if finished.
c. Heart Rate Zone setting (GB-580P only)
1. Please press Page button 2s to enter
Main MENU and then chose
ACCESSORIES.