Bryton Cardio 30 Guide D'utilisation page 17

By Lap Distance / Lap Location
Use Lap by Distance to specify the distance of each lap. After
running a specified distance, Cardio 30 will automatically mark the
lap.
(Set value)
TRAINING LAP DISTANCE
Use Lap by Location setting to set your current location as the lap
point. Upon reaching the lap point, Cardio 30 will automatically
mark the lap.
TRAINING LAP LOCATION
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