SUUNTO AMBIT3 SPORT - Manual (Page 37)

FusedSpeed GPS
sec 30 60 90 120
km/h
6
10
8
12
TIP: To get the most accurate readings with FusedSpeed, only
glance shortly at the watch when needed. Holding the watch in
front of you without moving it reduces the accuracy.
FusedSpeed is automatically enabled for running and other similar
types of activities, such as orienteering, floor ball and football
(soccer).
To enable FusedSpeed for a custom sport mode, ensure you select
an activity that uses FusedSpeed. This is indicated at the end of the
sport mode advanced settings section in Movescount.
37