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DUO 1025 Dual-Use Heart Rate Monitor
OPERATING THE WATCH
VIEWING THE BACKLIGHT SYSTEM
The Sportline Duo 1025 is equipped with an electroluminescent (EL) Backlight
System for viewing the display in low light conditions. To operate the Backlight:
1. PRESS the EL key. Backlight will illuminate for approximately 5 seconds.
2. AUTO BACKLIGHT: PRESS & HOLD the LIGHT key. The light icon ( ) will be visible
in upper right of display. The backlight will illuminate on any key press.
NOTE: Excessive use of Backlight System may significantly reduce battery life.
OPERATE BACKLIGHT:
LIGHT