Sony GPS-CS1KASP Operating Instructions Manual page 25

3
Place the GPS unit inserted in the carrying case on the
holder, then attach the GPS unit to the belt of the holder
using the hook-and-loop fastener on the side of the
carrying case.
4
Fix the GPS unit firmly using the hook-and-loop fastener of
the holder.
5
Align the groove on the bottom of the holder with the
groove of the bracket, then push the holder into the bracket
all the way until it clicks.
Use the GPS unit outside
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