Kalkhoff Derby Cycle Werke GmbH 2011 User Manual page 206

4s
Turn on display backlight
Push and hold key for 4 seconds -
display backlight is turned on.
Turn off display backlight
Push and hold key again for 4 seconds.
Select the cycling computer functions
Briefl y push the key to change between:
Trip Distance DIST
Odometer ODO
Chronometer CHRONO
Average Speed AVSPD
To reset cycle computer functions
Hold the key for a few seconds to reset the distance,
chronometer, and average speed values to zero.
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