Change your leather strap for another leather strap
Unscrew the Allen screws on the lugs using the tools provided in the box.
Remove the lug inserts and then the strap with the help of the Allen key.
Position the new leather strap, insert the lug inserts and tighten the Allen screw.
Change the leather strap for the rubber strap
Unscrew the Allen screws on the lugs using the tools provided in the box.
Remove the end link between the lugs using the screwdriver provided in the box. Change the screwdriver tip using the one you will find in the glass container.
Insert the lug inserts and tighten the Allen screw.